APA (7th ed.) Citation

Van Valkenburg, S. 1., & Statz, C. L. (1954). Elements of political geography (2d ed.). Prentice-Hall.

Chicago Style (17th ed.) Citation

Van Valkenburg, Samuel 1891, and Carl Louis Statz. Elements of Political Geography. 2d ed. New York: Prentice-Hall, 1954.

MLA (9th ed.) Citation

Van Valkenburg, Samuel 1891, and Carl Louis Statz. Elements of Political Geography. 2d ed. Prentice-Hall, 1954.