APA (7e ed.) Bronvermelding

ALLISON, I. S. (1974). Geology: The science of a changing earth. McGraw-Hill.

Chicago (17e ed.) Bronvermelding

ALLISON, Ira S. Geology: The Science of a Changing Earth. New York: McGraw-Hill, 1974.

MLA (9e ed.) Bronvermelding

ALLISON, Ira S. Geology: The Science of a Changing Earth. McGraw-Hill, 1974.