Dyfyniad APA

Walker, R. G. (1986). Facies Models (2nd ed.). Geological Association of Canada Publications.

Dyfyniad Arddull Chicago

Walker, Roger G. Facies Models. 2nd ed. Ontario: Geological Association of Canada Publications, 1986.

Dyfyniad MLA

Walker, Roger G. Facies Models. 2nd ed. Geological Association of Canada Publications, 1986.

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