Dyfyniad APA

Economic Geology Publishing Co. (1981). Economic Geology, Vol.76(1-4).

Dyfyniad Arddull Chicago

Economic Geology Publishing Co. Economic Geology, Vol.76(1-4). Economic Geology Publishing Co, 1981.

Dyfyniad MLA

Economic Geology Publishing Co. Economic Geology, Vol.76(1-4). 1981.

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