Ragan, D. M. (2009). Structural geology: An introduction to geometrical techniques (4th ed.). Cambridge University Press.
Čikaški stil citiranja (17. izdanje)Ragan, Donal M. Structural Geology: An Introduction to Geometrical Techniques. 4th ed. Cambridge: Cambridge University Press, 2009.
MLA način citiranja (9. izdanje)Ragan, Donal M. Structural Geology: An Introduction to Geometrical Techniques. 4th ed. Cambridge University Press, 2009.
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