APA (7th ed.) Citation

Westbroek, P. (1991). Life as a geological force: Dynamics of the earth. Norton.

Chicago Style (17th ed.) Citation

Westbroek, P. Life as a Geological Force: Dynamics of the Earth. New York: Norton, 1991.

MLA (9th ed.) Citation

Westbroek, P. Life as a Geological Force: Dynamics of the Earth. Norton, 1991.