APA način citiranja (7. izdanje)

Williams - Osula, K. (2013). A Computerized System for Managing Overdue Books in University Libraries. Nigerian Library Association.

Čikaški stil citiranja (17. izdanje)

Williams - Osula, K.O. A Computerized System for Managing Overdue Books in University Libraries. Nigerian Library Association, 2013.

MLA način citiranja (9. izdanje)

Williams - Osula, K.O. A Computerized System for Managing Overdue Books in University Libraries. Nigerian Library Association, 2013.

Upozorenje: Ovi citati možda nisu uvijek 100% točni.