Jelaskan Galeri dari Bison

Halbert, N, and Derr, J (1995) "A Comprehensive Evaluation of Cattle Introgression into US Federal Bison Herds," Journal of Heredity, Vol 98, Issue 1.

Nesheim, David A., “Profit, Preservation, and Shifting Definitions of Bison in American,” Environmental History, 17 (July 2012), 547–77.

Ward, T. J.; Bielawski, J. P.; Davis, S. K.; Templeton, J. W.; and Derr, J. N. (1999) "Identification of Domestic Cattle Hybrids in Wild Cattle and Bison Species: A General Approach Using mtDNA Markers and the Parametric Bootstrap," Animal Conservation