APA
Carlson D. H., Plummer C. C. & Carlson D. H. (2006). Physical geology. Boston: McGraw Hill Higher Education.
Chicago
Carlson Diane H, Plummer Charles C and Carlson Diane H. 2006. Physical geology. Boston: McGraw Hill Higher Education.
Harvard
Carlson D. H., Plummer C. C. and Carlson D. H. (2006). Physical geology. Boston: McGraw Hill Higher Education.
MLA
Carlson Diane H, Plummer Charles C and Carlson Diane H. Physical geology. Boston: McGraw Hill Higher Education. 2006.