APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

Spriegel, William Robert. Elements of Supervision. Wiley, 1957.

Warning: These citations may not always be 100% accurate.