Cita APA (7th ed.)
(1946). American Exploration and travel. Univ. of Oklahoma Pr.
Cita Chicago (17th ed.)
American Exploration and Travel. Norman: Univ. of Oklahoma Pr, 1946.
Cita MLA (9th ed.)
American Exploration and Travel. Univ. of Oklahoma Pr, 1946.
Atenció: Aquestes cites poden no estar 100% correctes.