Cita APA (7th ed.)

Verhoogen, J. (1970). Earth: An introduction to physical geology. Rinehart & winston.

Cita Chicago (17th ed.)

Verhoogen, John. Earth: An Introduction to Physical Geology. New York: Rinehart & winston, 1970.

Cita MLA (9th ed.)

Verhoogen, John. Earth: An Introduction to Physical Geology. Rinehart & winston, 1970.