APA Edition Citation

Picard, M. D., & Stokes, W. L. (1978). Introduction to geology: Physical and historical (2.). Prentice - Hall Inc.

Chicago Edition Citation

Picard, M D., and W L. Stokes. Introduction to Geology: Physical and Historical. 2. London: Prentice - Hall Inc, 1978.

MLA Edition Citation

Picard, M D., and W L. Stokes. Introduction to Geology: Physical and Historical. 2. Prentice - Hall Inc, 1978.