Παραπομπή APA

Sidhu, K. S. (1977). teaching of mathematics (rev. 2nd ed.). Sterling Publishers (P) Ltd.

Παραπομπή Chicago Style

Sidhu, Kulbir Singh. Teaching of Mathematics. rev. 2nd ed. New Delhi: Sterling Publishers (P) Ltd, 1977.

Παραπομπή MLA

Sidhu, Kulbir Singh. Teaching of Mathematics. rev. 2nd ed. Sterling Publishers (P) Ltd, 1977.