APA (7th ed.) Citation

Trollope, A., & Mason, R. (1968). North America. Penguin Books.

Chicago Style (17th ed.) Citation

Trollope, Anthony, and Robert Mason. North America. London ; New York: Penguin Books, 1968.

MLA (8th ed.) Citation

Trollope, Anthony, and Robert Mason. North America. Penguin Books, 1968.