Cita APA (7a ed.)
Cather, W. (1993). O Pioneers! (First published in 1993.). Dover Publications.
Cita Chicago Style (17a ed.)
Cather, Willa. O Pioneers! First published in 1993. New York: Dover Publications, 1993.
Cita MLA (9a ed.)
Cather, Willa. O Pioneers! First published in 1993. Dover Publications, 1993.
Precaución: Estas citas no son 100% exactas.