Dyfyniad APA

SKINNER, B. J. Physical geology#Brian J. Skinner, Stephen C. Porter. John Wiley & Sons.

Dyfyniad Arddull Chicago

SKINNER, Brian J. Physical Geology#Brian J. Skinner, Stephen C. Porter. John Wiley & Sons.

Dyfyniad MLA

SKINNER, Brian J. Physical Geology#Brian J. Skinner, Stephen C. Porter. John Wiley & Sons.

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