Cita APA (7th ed.)

Barnes, C. W. (1980). Earth, time, and life: An introduction to geology. John Wiley.

Cita Chicago (17th ed.)

Barnes, Charles W. Earth, Time, and Life: An Introduction to Geology. New York:: John Wiley, 1980.

Cita MLA (9th ed.)

Barnes, Charles W. Earth, Time, and Life: An Introduction to Geology. John Wiley, 1980.