Citazione Stile APA (7a Edizione)

Plummer, C. C., Carlson, D. H., & Hammersley, L. (2016). Physical geology (Fifteenth edition, International edition.). McGraw-Hill/Education, Inc.

Citazione stile Chigago Style (17a edizione)

Plummer, Charles C., Diane H. Carlson, e Lisa Hammersley. Physical Geology. Fifteenth edition, International edition. New York, NY: McGraw-Hill/Education, Inc, 2016.

Citatione MLA (9a ed.)

Plummer, Charles C., et al. Physical Geology. Fifteenth edition, International edition. McGraw-Hill/Education, Inc, 2016.