APA (7th ed.) Citation

Spriegel, W. R. (1957). Elements of supervision (2d ed.). Wiley.

Chicago Style (17th ed.) Citation

Spriegel, William Robert. Elements of Supervision. 2d ed. New York: Wiley, 1957.

MLA (9th ed.) Citation

Spriegel, William Robert. Elements of Supervision. 2d ed. Wiley, 1957.