Plummer, C. C., & Carlson, D. H. (2005). Physical geology (10h ed.). McGraw-Hill.
Chicago Style aipamenaPlummer, Charles C., and Diane H. Carlson. Physical Geology. 10h ed. New York: McGraw-Hill, 2005.
MLA aipamenaPlummer, Charles C., and Diane H. Carlson. Physical Geology. 10h ed. McGraw-Hill, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.