Marshak, S. (2009). Essentials of geology (3rd.ed.). W.W.Norton.
Čikaški stil citiranjaMarshak, Stephen. Essentials of Geology. 3rd.ed. New York: W.W.Norton, 2009.
MLA način citiranjaMarshak, Stephen. Essentials of Geology. 3rd.ed. W.W.Norton, 2009.
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