Graham, J. P. (2010). Devils Postpile National Monument: Geologic resource evaluation report. Geologic Resources Division, Natural Resource Program Center ; U.S. Department of the Interior, National Park Service, Natural Resource Program Center.
Chicago Style (17th ed.) CitationGraham, John P. Devils Postpile National Monument: Geologic Resource Evaluation Report. Denver, Colorado : Ft. Collins, Colorado: Geologic Resources Division, Natural Resource Program Center ; U.S. Department of the Interior, National Park Service, Natural Resource Program Center, 2010.
MLA (9th ed.) CitationGraham, John P. Devils Postpile National Monument: Geologic Resource Evaluation Report. Geologic Resources Division, Natural Resource Program Center ; U.S. Department of the Interior, National Park Service, Natural Resource Program Center, 2010.