Ohio College Library Center. (1977). OCLC: Impact and use. Ohio: Office of Educational Services.
Чикагска система за цитиранеOhio College Library Center. OCLC: Impact and Use. Ohio: Office of Educational Services, 1977.
MLA формат за цитиранеOhio College Library Center. OCLC: Impact and Use. Ohio: Office of Educational Services, 1977.
Внимание: Тези цитати може да не са 100% точни.