APA (7e ed.) Bronvermelding
Cather, W. (1993). O Pioneers! (First published in 1993.). Dover Publications.
Chicago (17e ed.) Bronvermelding
Cather, Willa. O Pioneers! First published in 1993. New York: Dover Publications, 1993.
MLA (9e ed.) Bronvermelding
Cather, Willa. O Pioneers! First published in 1993. Dover Publications, 1993.
Let op: Deze citaties zijn niet altijd 100% accuraat.