Παραπομπή APA

Krulik, S., Weise, I. B., & Rosskopf, M. (1975). Teaching secondary school mathematics. Philadelphia: W. B. Saunders Company.

Παραπομπή Chicago Style

Krulik, Stephen, Ingrid B. Weise, and Myron Rosskopf. Teaching Secondary School Mathematics. Philadelphia: W. B. Saunders Company, 1975.

Παραπομπή MLA

Krulik, Stephen, Ingrid B. Weise, and Myron Rosskopf. Teaching Secondary School Mathematics. Philadelphia: W. B. Saunders Company, 1975.

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