Cita APA (7th ed.)

Rolvaag, O. E., & Colcord, L. (1929). Giants in the earth: A saga of the prairie. Harper & Row.

Cita Chicago (17th ed.)

Rolvaag, O. E., i Lincoln Colcord. Giants in the Earth: A Saga of the Prairie. New York: Harper & Row, 1929.

Cita MLA (8th ed.)

Rolvaag, O. E., i Lincoln Colcord. Giants in the Earth: A Saga of the Prairie. Harper & Row, 1929.