Dyfyniad APA

Neumann, H. (1981). Composition and properties of petroleum. Halsted Press.

Dyfyniad Arddull Chicago

Neumann, Hans-Joachim. Composition and Properties of Petroleum. New York: Halsted Press, 1981.

Dyfyniad MLA

Neumann, Hans-Joachim. Composition and Properties of Petroleum. Halsted Press, 1981.

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