Παραπομπή APA

Blatt, H., & Tracy, R. J. O. (2006). Petrology: Igneous,sedimentary and metamorphic (3rd ed.). W.H.Freeman.

Παραπομπή Chicago Style

Blatt, Harvey, και Robert J. Owens Tracy. Petrology: Igneous,sedimentary and Metamorphic. 3rd ed. New York: W.H.Freeman, 2006.

Παραπομπή MLA

Blatt, Harvey, και Robert J. Owens Tracy. Petrology: Igneous,sedimentary and Metamorphic. 3rd ed. W.H.Freeman, 2006.