Wardlaw, B. R. (1979). Studies of the Permian Phosphoria formation and related rocks, Great Basin-Rocky Mountain region. United States Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationWardlaw, Bruce R. Studies of the Permian Phosphoria Formation and Related Rocks, Great Basin-Rocky Mountain Region. Washington: United States Department of the Interior, Geological Survey, 1979.
MLA (9th ed.) CitationWardlaw, Bruce R. Studies of the Permian Phosphoria Formation and Related Rocks, Great Basin-Rocky Mountain Region. United States Department of the Interior, Geological Survey, 1979.
Warning: These citations may not always be 100% accurate.