APA (7th ed.) Citation

Shimer, J. A. (1968). This changing earth: An introduction to geology. Harper & Row.

Chicago Style (17th ed.) Citation

Shimer, John A. This Changing Earth: An Introduction to Geology. New York: Harper & Row, 1968.

MLA (9th ed.) Citation

Shimer, John A. This Changing Earth: An Introduction to Geology. Harper & Row, 1968.