APA (7th ed.) Citation

Willoughby, S. S. (1967). Contemporary teaching of secondary school mathematics. Wiley.

Chicago Style (17th ed.) Citation

Willoughby, Stephen S. Contemporary Teaching of Secondary School Mathematics. New York: Wiley, 1967.

MLA (9th ed.) Citation

Willoughby, Stephen S. Contemporary Teaching of Secondary School Mathematics. Wiley, 1967.

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