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Organization (as author)
- Oxford University Press51
- Organisation for Economic Co-operation and Development49
- ProQuest (Firm)49
- Adam Matthew Digital (Firm)46
- Alexander Street Press37
- William S. Hein & Company36
- Gale (Firm)29
- Chadwyck-Healey, Inc.23
- ProQuest Information and Learning Company19
- EBSCO Publishing (Firm)18
- Library of Congress17
- National Archives (Great Britain)17
- Institute for Scientific Information16
- Thomson Reuters15
- East View Publications13
- H.W. Wilson Company13
- Statista GmbH13
- United States. Environmental Protection Agency13
- National Institute of Standards and Technology (U.S.)12
- National Library of Medicine (U.S.)12
