Dyfyniad APA

Assessment, 8. U. S. O. o. t. (1980). World petroleum availability 1980-2000: A techical memorandum. Springfield, Va. : N.T.I.S..

Dyfyniad Arddull Chicago

Assessment, 8553 United States. Officer of technology. World Petroleum Availability 1980-2000: A Techical Memorandum. Springfield, Va. : N.T.I.S., 1980.

Dyfyniad MLA

Assessment, 8553 United States. Officer of technology. World Petroleum Availability 1980-2000: A Techical Memorandum. Springfield, Va. : N.T.I.S., 1980.

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