Cita APA (7a ed.)

Rolvaag, O. (1927). Giants in the earth. Harper & Brothers.

Cita Chicago Style (17a ed.)

Rolvaag, O.E. Giants in the Earth. New York, Estados Unidos: Harper & Brothers, 1927.

Cita MLA (9a ed.)

Rolvaag, O.E. Giants in the Earth. Harper & Brothers, 1927.