APA (7e ed.) Bronvermelding
Wardell, D. (1966). Practical help for christian workers: Features filling and indexing.
Chicago (17e ed.) Bronvermelding
Wardell, Don. Practical Help for Christian Workers: Features Filling and Indexing. Winona lake, 1966.
MLA (9e ed.) Bronvermelding
Wardell, Don. Practical Help for Christian Workers: Features Filling and Indexing. 1966.
Let op: Deze citaties zijn niet altijd 100% accuraat.