APA aipamena

India. Coal Board. Publication and Statistics Wing. Coal directory of India. Publication and Statistics Wing, Coal Board.

Chicago Style aipamena

India. Coal Board. Publication and Statistics Wing. Coal Directory of India. Calcutta: Publication and Statistics Wing, Coal Board.

MLA aipamena

India. Coal Board. Publication and Statistics Wing. Coal Directory of India. Publication and Statistics Wing, Coal Board.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.