Não informado. (1974). Utah geology. Utah Department of Natural Resources, Geological and Mineral Survey.
Lua i Stíl Chicago (17ú heag.)Não informado. Utah Geology. Salt Lake City, Utah: Utah Department of Natural Resources, Geological and Mineral Survey, 1974.
Lua MLA (8ú heag.)Não informado. Utah Geology. Utah Department of Natural Resources, Geological and Mineral Survey, 1974.
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