APA Citation

De, K. (1964). A text book on astronomy (3rd ed.). Calcutta: Book Syndicate.

Chicago Style Citation

De, K.K. A Text Book On Astronomy. 3rd ed. Calcutta: Book Syndicate, 1964.

MLA Citation

De, K.K. A Text Book On Astronomy. 3rd ed. Calcutta: Book Syndicate, 1964.

Warning: These citations may not always be 100% accurate.