Παραπομπή APA

Pramatha Nath Bose. (1978). Epochs of civilization.

Παραπομπή Chicago Style

Pramatha Nath Bose. Epochs of Civilization. New Delhi, Ashish Educational Sevices, 1978.

Παραπομπή MLA

Pramatha Nath Bose. Epochs of Civilization. 1978.