Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.