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.
H.W. Wilson Company: Publisher of web, CD-ROM, and print references for librarians and researchers.
Helicon: Publisher of the Hutchinson Encyclopedias.
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.
The Visiting Fireman: Annual publication and reference book for fire buffing, and fire service enthusiasts.
Trident Press: Publishes reference books, including dictionaries, encyclopedias, and atlases.
Words@Random: Publishes references materials, including dictionaries, handbooks and encyclopedias.