APA (7th ed.) Citation

Spears, H. (1951). Principles of teaching. Prentice-Hall.

Chicago Style (17th ed.) Citation

Spears, Harold. Principles of Teaching. New York, New York: Prentice-Hall, 1951.

MLA (9th ed.) Citation

Spears, Harold. Principles of Teaching. Prentice-Hall, 1951.