Hough, E. (1918). The passing of the frontier: A chronicle of the old West. Yale university press; [etc., etc.].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHough, Emerson. The Passing of the Frontier: A Chronicle of the Old West. New Haven: Yale university press; [etc., etc.], 1918.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHough, Emerson. The Passing of the Frontier: A Chronicle of the Old West. Yale university press; [etc., etc.], 1918.
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