Dyfyniad APA
Speight, J. G. (1999). The chemistry and technology of petroleum (3rd ed., rev. and expanded.). Marcel Dekker.
Dyfyniad Arddull Chicago
Speight, James G. The Chemistry and Technology of Petroleum. 3rd ed., rev. and expanded. New York: Marcel Dekker, 1999.
Dyfyniad MLA
Speight, James G. The Chemistry and Technology of Petroleum. 3rd ed., rev. and expanded. Marcel Dekker, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.