Dyfyniad APA

Ragan, D. M. (2009). Structural Geology: An introduction to geometrical techniques / Donal M. Ragan (4th ed.). Cambridge university.

Dyfyniad Arddull Chicago

Ragan, Donal M. Structural Geology: An Introduction to Geometrical Techniques / Donal M. Ragan. 4th ed. New York: Cambridge university, 2009.

Dyfyniad MLA

Ragan, Donal M. Structural Geology: An Introduction to Geometrical Techniques / Donal M. Ragan. 4th ed. Cambridge university, 2009.

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