APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Spriegel, William R. Elements of Supervision. 2nd ed. New York: J. Wiley, 1957.

MLA (9th ed.) Citation

Spriegel, William R. Elements of Supervision. 2nd ed. J. Wiley, 1957.