Gaya APA

McCaslin, J, (. (1981). International petroleum encyclopedia. Volume 14,1981 (1981). : Tulsa : The Petroleum Publ. Co.,.

Gaya MLA

McCaslin, John, (Editor). "International petroleum encyclopedia. Volume 14,1981". 1981 : Tulsa : The Petroleum Publ. Co.,, 1981. Text.