Dyfyniad APA

Barnes, J. W. (1995). Basic geological mapping (3rd ed.). John Wiley.

Dyfyniad Arddull Chicago

Barnes, John W. Basic Geological Mapping. 3rd ed. New York: John Wiley, 1995.

Dyfyniad MLA

Barnes, John W. Basic Geological Mapping. 3rd ed. John Wiley, 1995.

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