Deakin, A., Muir, G. W., Smith, A. G. (1935). "Hybridization of domestic cattle, bison and yak. Report of Wainwright experiment". Publication 479, Technical Bulletin 2, Dominion of Canada, Department of Agriculture, Ottawa; cited in: Zhang, R. C. "Interspecies Hybridization between Yak, Bos taurus and Bos indicus and Reproduction of the Hybrids" (14 Dec 2000). In: Recent Advances in Yak Reproduction, Zhao X. X. and Zhang R. C. (Eds.). International Veterinary Information Service.
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Deakin, A., Muir, G. W., Smith, A. G. (1935). "Hybridization of domestic cattle, bison and yak. Report of Wainwright experiment". Publication 479, Technical Bulletin 2, Dominion of Canada, Department of Agriculture, Ottawa; cited in: Weiner, Gerald (2003). The Yak, Second Edition, FAO RAP Publication, pp. 18, 338.
