APA (7th ed.) Citation

OCLC. (1990). Guide to searching the Online Union Catalog. OCLC Online Computer Library Center.

Chicago Style (17th ed.) Citation

OCLC. Guide to Searching the Online Union Catalog. Dublin, Ohio: OCLC Online Computer Library Center, 1990.

MLA (9th ed.) Citation

OCLC. Guide to Searching the Online Union Catalog. OCLC Online Computer Library Center, 1990.

Warning: These citations may not always be 100% accurate.