APA (7th ed.) Citation

Rolvaag, O. Giants in the earth. Harper & Row Publishers.

Chicago Style (17th ed.) Citation

Rolvaag, O.E. Giants in the Earth. New York: Harper & Row Publishers.

MLA (9th ed.) Citation

Rolvaag, O.E. Giants in the Earth. Harper & Row Publishers.

Warning: These citations may not always be 100% accurate.