APA (7th ed.) Citation

Van Valkenburg, S., & Held, C. C. (1952). Europe (2nd ed.). J. Wiley & sons.

Chicago Style (17th ed.) Citation

Van Valkenburg, Samuel, and Colbert C. Held. Europe. 2nd ed. New York: J. Wiley & sons, 1952.

MLA (9th ed.) Citation

Van Valkenburg, Samuel, and Colbert C. Held. Europe. 2nd ed. J. Wiley & sons, 1952.