Dyfyniad APA

Sinha, R., & Sharma, N. (1970). Mineral economics: A textbook for university students. Oxford and IBH Publishing Co.

Dyfyniad Arddull Chicago

Sinha, R.K, and N.L Sharma. Mineral Economics: A Textbook for University Students. New Delhi: Oxford and IBH Publishing Co, 1970.

Dyfyniad MLA

Sinha, R.K, and N.L Sharma. Mineral Economics: A Textbook for University Students. Oxford and IBH Publishing Co, 1970.

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