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^Reeves, Randall R. 1978. Atlantic Walrus (Odobenus rosmarus rosmarus): A Literature Survey and Status Report. Washington, DC: U.S. Dept. of the Interior, Fish and Wildlife Service, p. 9.
^Dodd, G. J., G. P. Benson, & D. T. Watts. 1996. Arctic Pilot, vol. 2. Taunton, UK: Hydrographer of the Navy, p. 225.