See also:
- ABC-CLIO - Publisher of reference books, CD-ROM products, and research publications.
- Bernan - Publisher of statistical and government references. Distributes information published by the U.S. government and international agencies.
- Book Hunter Press - Publishes reference materials for book delears, including the Used Book Lover's Guides.
- BRB Publications, Inc. - Offers products and services dedicated to searching and understanding of public records.
- Citadel Data Net - Reference and consumer publishers.
- Collins Cobuild - Publishes dictionaries and reference works for teachers and learners of English.
- Dashofer Holding, Ltd. - International publisher of reference books, software, and newsletters.
- EBSCO Information Services - Offers databases, electronic journals, books, and subscription services.
- ETS Publishing House - Publishes Russian-English dictionaries.
- Europa Publications - Publishes a series of regularly revised reference books that cover international affairs, politics, and economics.
- Facts On File, Inc. - Publisher of print and electronic reference products for the school and library market.
- Gale Group - Reference products for libraries, schools and businesses.
- Helicon - Publisher of the Hutchinson Encyclopedias.
- H.W. Wilson Company - Publisher of web, CD-ROM, and print references for librarians and researchers.
- Institute for Scientific Information - Publishes scholarly research databases in the sciences, social sciences, and arts and humanities.
- Kinship - Publishes books and CD-ROMs, including many New York State source records for genealogists. Also includes research suggestions.
- Librairie du Liban Publishers - Offers monolingual, bilingual, and multilingual dictionaries, encylopedias, and books.
- Libraries Unlimited - Publishes bibliographies and reference books, library science textbooks, information science materials, and practical handbooks, monographs, and manuals for library educators, librarians and teachers.
- Marquis Who's Who - Publishes biography reference sources covering notable people throughout the world.
- Marshall Cavendish Corporation - Publisher of illustrated reference and children's books.
- McFarland & Company, Inc. - Publisher of scholarly and reference books.
- Merriam-Webster - Publisher of American English dictionaries and reference sources.
- Moschovitis Group - Information technology and reference publishing.
- Primary Source Microfilm - Publisher of archival research materials researchers in the humanities and social sciences.
- Quirk Books - Publishers of irreverent pop-culture, humor, gift, self-help, and impractical reference books.
- R.R. Bowker - Publishes reference products such as Publishers Trade List Annual, Books in Print, and Ulrich's International Periodicals Directory. Serves as official US ISBN agency.
- Scholastic Library Publishing - Publisher of reference and non-fiction books for grades K-12.
- Shogakukan, Inc. - Japanese publisher of dictionaries, educational, and other non-fiction and fiction works, including manga books.
- Sterling Publishing Group PLC - Specialist publishers of annual reference books published both independently and for trade and professional bodies. Titles encompass a cross-section of international industry, technology and business professions.
- Trident Press - Publishes reference books, including dictionaries, encyclopedias, and atlases.
- The Visiting Fireman - Annual publication and reference book for fire buffing, and fire service enthusiasts.
- Words@Random - Publishes references materials, including dictionaries, handbooks and encyclopedias.