Lua APA (7ú heag.)

Cottam, W. P. (1947). Is Utah Sahara bound? Extension division, University of Utah.

Lua i Stíl Chicago (17ú heag.)

Cottam, Walter P. Is Utah Sahara Bound? Salt Lake City: Extension division, University of Utah, 1947.

Lua MLA (8ú heag.)

Cottam, Walter P. Is Utah Sahara Bound? Extension division, University of Utah, 1947.

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