APA (7th ed.) Citation

Gangel, K. O. (1979). Understanding teaching (3rd ed.). Evangelical Teacher Training Association.

Chicago Style (17th ed.) Citation

Gangel, Kenneth O. Understanding Teaching. 3rd ed. Wheaton, Ill.: Evangelical Teacher Training Association, 1979.

MLA (8th ed.) Citation

Gangel, Kenneth O. Understanding Teaching. 3rd ed. Evangelical Teacher Training Association, 1979.