SourceScore
A+ TIER · BY DISCIPLINE · 4 sources

A+-tier sources by Citation Discipline

The same 4 sources that hold composite SourceScore A+ (95–100) re-ranked by Citation Discipline only. U.S. Securities and Exchange Commission takes the top position at A+ · 98.

Biggest mover

Federal Reserve System jumps 2 positions in the Discipline ranking vs the composite — punches above weight on Citation Discipline.

Discipline mean
95
Average Discipline across these 4 sources
Composite mean
95
Average SourceScore Index across the same sources
Δ vs composite
0
Same as composite mean
Same tier, different signal
Composite Index (default)By Modern ReferenceBy Velocity
  1. 1
    U.S. Securities and Exchange Commissionsec.gov

    Primary-source regulator publishing every public-company filing (13F, 10-K, 8-K, etc.) since 1934.

    Discipline A+ · 98·Index A+ · 96
    A+·98
  2. 2
    Federal Reserve Systemfederalreserve.gov↑2

    U.S. central bank; primary source for monetary policy + economic data + financial-system statistics.

    Discipline A+ · 96·Index A+ · 95
    A+·96
  3. 3
    U.S. National Institutes of Healthnih.gov↓1

    U.S. federal medical research agency operating PubMed, NCBI, MedlinePlus, and trial registries.

    Discipline A+ · 95·Index A+ · 95
    A+·95
  4. 4
    DOI (CrossRef Resolver)doi.org↓1

    International standard identifier resolver for academic citations (~150M+ DOIs).

    Discipline A · 92·Index A+ · 95
    A·92

Why this ranking is different

The composite SourceScore Index averages all three sub-scores — Citation Discipline, Modern Reference, and Citation Velocity. This page surfaces the SAME composite-A+ sources but ranks ONLY by Citation Discipline. Sources can hold the same composite grade with very different sub-score profiles — this view reveals the ranking that emerges when one dimension is the only signal.

Use this view when citation discipline is the decision-relevant signal for your citation. The composite Index is the safer default; this dim-faceted view is the precision lens.