Παραπομπή APA

Ragan, D. M. (2009). Structural geology: An inroduction to geometrical techniques (4th ed.). Cambridge University.

Παραπομπή Chicago Style

Ragan, Donal M. Structural Geology: An Inroduction to Geometrical Techniques. 4th ed. Cambridge: Cambridge University, 2009.

Παραπομπή MLA

Ragan, Donal M. Structural Geology: An Inroduction to Geometrical Techniques. 4th ed. Cambridge University, 2009.