APA Style

Plummer, Charles C. Plummer, Charles C.. (2007). Physical Geology.-- . America: McGraw-Hill.

Chicago Style

Plummer, Charles C. Plummer, Charles C.. Physical Geology.--. America: McGraw-Hill, 2007. Buku.

MLA Style

Plummer, Charles C. Plummer, Charles C.. Physical Geology.--. America: McGraw-Hill, 2007. Buku.

Turabian Style

Plummer, Charles C. Plummer, Charles C.. Physical Geology.--. America: McGraw-Hill, 2007. Buku.