Dyfyniad APA
Society of Petroleum Engineers (U.S.) & ebrary, Inc. (2011). A guide to professional engineering licensure for petroleum engineers and sample P.E. exam (11th ed.). Society of Petroleum Engineers.
Dyfyniad Arddull Chicago
Society of Petroleum Engineers (U.S.) and Inc ebrary. A Guide to Professional Engineering Licensure for Petroleum Engineers and Sample P.E. Exam. 11th ed. [Richardson, TX ]: Society of Petroleum Engineers, 2011.
Dyfyniad MLA
Society of Petroleum Engineers (U.S.) and Inc ebrary. A Guide to Professional Engineering Licensure for Petroleum Engineers and Sample P.E. Exam. 11th ed. Society of Petroleum Engineers, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.