APA Citation

Skinner, B. J., & Porter, S. C. (1987). Physical geology. New York: John Wiley & Sons.

Chicago Style Citation

Skinner, Brian J., and Stephen C. Porter. Physical Geology. New York: John Wiley & Sons, 1987.

MLA Citation

Skinner, Brian J., and Stephen C. Porter. Physical Geology. New York: John Wiley & Sons, 1987.

Warning: These citations may not always be 100% accurate.