Παραπομπή APA

Baidyanath Basu Tanuka Chattopadhyay Sudhindra Nath Biswas. (2017). Introduction to Astrophysics (2.). PH Learning.

Παραπομπή Chicago Style

Baidyanath Basu Tanuka Chattopadhyay Sudhindra Nath Biswas. Introduction to Astrophysics. 2. Delhi: PH Learning, 2017.

Παραπομπή MLA

Baidyanath Basu Tanuka Chattopadhyay Sudhindra Nath Biswas. Introduction to Astrophysics. 2. PH Learning, 2017.