APA Citation

De, K. (1969). A text book on astronomy (4th ed.). Calcutta: P.C.Bhowal.

Chicago Style Citation

De, K.K. A Text Book On Astronomy. 4th ed. Calcutta: P.C.Bhowal, 1969.

MLA Citation

De, K.K. A Text Book On Astronomy. 4th ed. Calcutta: P.C.Bhowal, 1969.

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