APA (7th ed.) Citation

Online Computer Library Center, Inc. OCLC. (1984). A Guide to the OCLC database and the special collections therein. OCLC.

Chicago Style (17th ed.) Citation

Online Computer Library Center, Inc. OCLC. A Guide to the OCLC Database and the Special Collections Therein. Dublin, Ohio: OCLC, 1984.

MLA (9th ed.) Citation

Online Computer Library Center, Inc. OCLC. A Guide to the OCLC Database and the Special Collections Therein. OCLC, 1984.