APA (7th ed.) Citation

Folk, R. L. (1968). Petrology of sedimentary rocks. Hemphill's.

Chicago Style (17th ed.) Citation

Folk, Robert L. Petrology of Sedimentary Rocks. Austin, Tex.: Hemphill's, 1968.

MLA (8th ed.) Citation

Folk, Robert L. Petrology of Sedimentary Rocks. Hemphill's, 1968.