Clifton, R. T. (1970). Barbs, prongs, points, prickers, & stickers: A complete and illustrated catalogue of antique barbed wire ([1st ed.). University of Oklahoma Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रClifton, Robert T. Barbs, Prongs, Points, Prickers, & Stickers: A Complete and Illustrated Catalogue of Antique Barbed Wire. [1st ed. Norman]: University of Oklahoma Press, 1970.
एमएलए (8वां संस्करण) प्रशस्ति पत्रClifton, Robert T. Barbs, Prongs, Points, Prickers, & Stickers: A Complete and Illustrated Catalogue of Antique Barbed Wire. [1st ed. University of Oklahoma Press, 1970.
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