Cita APA (7a ed.)
Clark, T. D. (1959). Frontier America. The Story of The Westward Movement. Charles Scribner's Sons.
Cita estilo Chicago (17a ed.)
Clark, Thomas D. Frontier America. The Story of The Westward Movement. Nueva York, EUA: Charles Scribner's Sons, 1959.
Cita MLA (9a ed.)
Clark, Thomas D. Frontier America. The Story of The Westward Movement. Charles Scribner's Sons, 1959.
Precaución: Estas citas no son 100% exactas.