APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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