Dyfyniad APA

Indian Bureau of Mines. (1978). Gypsum: Mineral inventory as on 1.1.1975. Indian Bureau of Mines, Govt. of India, Ministry of Steel and Mines.

Dyfyniad Arddull Chicago

Indian Bureau of Mines. Gypsum: Mineral Inventory as on 1.1.1975. Nagpur: Indian Bureau of Mines, Govt. of India, Ministry of Steel and Mines, 1978.

Dyfyniad MLA

Indian Bureau of Mines. Gypsum: Mineral Inventory as on 1.1.1975. Indian Bureau of Mines, Govt. of India, Ministry of Steel and Mines, 1978.

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