Lewis, G. E., & Vaughn, P. P. (1965). Early Permian vertebrates from the Cutler Formation of the Placerville area, Colorado. U.S. Govt. Print. Off.
Chicago Style (17th ed.) CitationLewis, G. Edward, and Peter Paul Vaughn. Early Permian Vertebrates from the Cutler Formation of the Placerville Area, Colorado. Washington: U.S. Govt. Print. Off, 1965.
MLA (9th ed.) CitationLewis, G. Edward, and Peter Paul Vaughn. Early Permian Vertebrates from the Cutler Formation of the Placerville Area, Colorado. U.S. Govt. Print. Off, 1965.
Warning: These citations may not always be 100% accurate.