APA (7th ed.) Citation

Ehlers, E. G., & Blatt, H. (1982). Petrology: Igneous, sedimentary, and metamorphic. Freeman.

Chicago Style (17th ed.) Citation

Ehlers, Ernest G., and Harvey Blatt. Petrology: Igneous, Sedimentary, and Metamorphic. San Francisco: Freeman, 1982.

MLA (9th ed.) Citation

Ehlers, Ernest G., and Harvey Blatt. Petrology: Igneous, Sedimentary, and Metamorphic. Freeman, 1982.

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