APA (7e ed.) Bronvermelding

Plummer, C. C. (2001). Physical geology: Featuring the smithsonian institution's journey through geology CD-ROM. McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Plummer, Charles C. Physical Geology: Featuring the Smithsonian Institution's Journey Through Geology CD-ROM. Boston: McGraw-Hill, 2001.

MLA (9e ed.) Bronvermelding

Plummer, Charles C. Physical Geology: Featuring the Smithsonian Institution's Journey Through Geology CD-ROM. McGraw-Hill, 2001.

Let op: Deze citaties zijn niet altijd 100% accuraat.