McDougall, L. (1997). The complete tracker: Tracks, signs, and habits of North American wildlife. :Lyons & Burford.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMcDougall, Len. The Complete Tracker: Tracks, Signs, and Habits of North American Wildlife. New York: :Lyons & Burford, 1997.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMcDougall, Len. The Complete Tracker: Tracks, Signs, and Habits of North American Wildlife. :Lyons & Burford, 1997.
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