APA-ийн эшлэл(7 дахь хэвлэлт)
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.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
Society of Petroleum Engineers (U.S.) ба 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.
MLA -ийн эшлэл (9 дэх хэвлэлт)
Society of Petroleum Engineers (U.S.) ба Inc ebrary. A Guide to Professional Engineering Licensure for Petroleum Engineers and Sample P.E. Exam. 11th ed. Society of Petroleum Engineers, 2011.
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