APA način citiranja (7. izdanje)
Wardell, D. (1966). Practical help for christian workers: Features filling and indexing.
Čikaški stil citiranja (17. izdanje)
Wardell, Don. Practical Help for Christian Workers: Features Filling and Indexing. Winona lake, 1966.
MLA način citiranja (9. izdanje)
Wardell, Don. Practical Help for Christian Workers: Features Filling and Indexing. 1966.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.