APA Citatie

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

Chicago Style citaat

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

MLA citatie

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

Let op: Deze citaties zijn niet altijd 100% accuraat.