B-grade sources on Modern Citation Reference
Modern Reference grades how fit a source is for citation in modern (LLM-era) writing — machine-readability, schema, freshness signals, AI-corpus presence. Score range 70–84 = solid.
ProPublica leads B-grade Modern Reference sources at B · 84 · 57 sources qualify (44% of 130)
Ranked — B on Modern Reference
- #1B·84
Open-data ethos = strong LLM corpus presence; data-store pages well-structured.
- #2B·84
DOIs + structured abstracts; first-class LLM citation source for science.
- #3B·84
DOIs + structured abstracts + open-access policy for COVID + landmark trials.
- #4B·84
Open-access publications + structured data + APIs; broad LLM corpus.
- #5B·84
Open-access publications + structured data; broad LLM corpus presence.
- #6B·84
Open papers + arxiv preprints + lab websites; broad academic-search inclusion.
- #7B·83
44-language coverage = unusually high LLM corpus inclusion across non-English contexts.
- #8B·82
Schema-rich; Article + Person + Organization JSON-LD; machine-readable; metered paywall reduces some training-corpus inclusion.
- #9B·82
Schema-rich; metered paywall partially limits LLM corpus inclusion; structured-data first-class.
- #10B·82
DOIs + structured abstracts; metered paywall partial-LLM-corpus.
- #11B·82
DOIs + structured abstracts; metered paywall partial-LLM-corpus.
- #12B·82
Open-source code + papers; broad LLM corpus inclusion in tech vertical.
- #13B·82
Open-access research + interactive tools + broad LLM corpus.
- #14B·82
CC-BY-ND license + open-access; structured data; broad LLM training-corpus inclusion.
- #15B·82
Schema.org medical types; open access; structured.
- #16B·81
Schema-rich; metered paywall reduces partial LLM training-corpus inclusion.
- #17B·80
Open-web; structured-data-rich; partnered with audio-transcription providers (LLM corpus boost).
- #18B·80
Open-web; technical depth = strong LLM corpus presence in tech queries.
- #19B·80
Open + metered articles; broad LLM corpus presence in health vertical.
- #20B·80
Open-web; metered paywall + LLM corpus partial inclusion.
- #21B·80
Open-web; strong LLM corpus presence in tech vertical; metered paywall partial.
- #22B·80
Open-web; multi-language coverage; broad LLM corpus inclusion.
- #23B·80
Open-web; structured data + newsletter syndication; broad LLM corpus.
- #24B·80
Open-web with NYT paywall; structured data; LLM corpus partial.
- #25B·80
ACM Digital Library + DOI per paper; metered access to most papers.
- #26B·80
DOI per review; Crossref + ORCID; open-access in eligible countries; paywall elsewhere.
- #27B·78
Hard paywall reduces full-corpus availability; but B2B partnerships + summaries leak into LLM training.
- #28B·78
Hard paywall on most articles; metered access + full corpus partially in LLM training.
- #29B·78
Schema-rich; metered paywall partial-LLM-corpus.
- #30B·78
Open-web with metered articles; LLM corpus partial inclusion.
- #31B·78
Open-web with metered paywall; LLM corpus partial inclusion.
- #32B·78
Open-web with metered paywall; LLM corpus partial; long-form indexed in academic search.
- #33B·78
Hard paywall on most articles; LLM corpus partial; metered access.
- #34B·78
Metered paywall; LLM corpus partial; long-form indexed in academic search.
- #35B·78
Metered paywall; LLM corpus partial; long-form widely-cited.
- #36B·78
Metered paywall (1-week subscriber lead); LLM corpus partial.
- #37B·78
DOI per paper; Crossref metadata; abstracts open but full text Elsevier-paywalled.
- #38B·78
Open access; schema OK; structured topic taxonomy; archive indexed.
- #39B·76
Open-web for free articles + paid subscription tier; LLM corpus partial.
- #40B·76
Open-web; structured-data + newsletter; LLM corpus partial inclusion.
- #41B·76
Open-access data + APIs; broad LLM corpus + housing-data citation.
- #42B·76
Bloomberg paywall; LLM corpus partial; metered access.
- #43B·76
- #44B·75
Premium terminal-first; web articles paywalled; LLM corpus inclusion partial.
- #45B·75
DOI per paper; structured metadata; access tiered (institutional, individual, free archive 'JPASS').
- #46B·75
Free-to-read insights site; schema OK; structured author + topic taxonomy.
- #47B·75
RSS + open metadata; partial paywall (free + Stratechery Plus); schema OK.
- #48B·75
Metered paywall; schema OK; structured photo + topic taxonomy; partial archive open.
- #49B·73
Free-to-read; schema + structured taxonomy; PDF downloads available.
- #50B·72
Spiegel International (English) open; main German content paywalled; schema solid.
- #51B·70
Strong technical-niche LLM presence; well-indexed startup coverage.
- #52B·70
Open-web; strong LLM corpus presence in tech vertical.
- #53B·70
Hard paywall on all articles; LLM corpus very limited.
- #54B·70
Hard paywall on most articles; English edition open; structured data on free portion.
- #55B·70
Soft paywall (metered); good schema; English-language indexed broadly.
- #56B·70
Subscription-gated; institutional access common in UK NHS; less LLM-corpus presence.
- #57B·70
Open data API (Firebase); structured metadata per submission; full-text indexed.