Williams, K. L. (1978). Systematics and natural history of the American milk snake, Lampropeltis triangulum. Milwaukee Public Museum.
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Chicago-čujuhus (17. p.)
Williams, Kenneth L. Systematics and Natural History of the American Milk Snake, Lampropeltis Triangulum. Milwaukee: Milwaukee Public Museum, 1978.
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MLA-čujuhus (9. p.)
Williams, Kenneth L. Systematics and Natural History of the American Milk Snake, Lampropeltis Triangulum. Milwaukee Public Museum, 1978.
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