Trut, Lyudmila N. (1999). "Early Canid Domestication: The Farm-Fox Experiment: Foxes bred for tamability in a 40-year experiment exhibit remarkable transformations that suggest an interplay between behavioral genetics and development". American Scientist. 87 (2): 160–169. doi:10.1511/1999.2.160. JSTOR27857815. ProQuest215262475.
Trut, Lyudmila N. (1999). "Early Canid Domestication: The Farm-Fox Experiment: Foxes bred for tamability in a 40-year experiment exhibit remarkable transformations that suggest an interplay between behavioral genetics and development". American Scientist. 87 (2): 160–169. doi:10.1511/1999.2.160. JSTOR27857815. ProQuest215262475.
nationalgeographic.com
ngm.nationalgeographic.com
Ratliff, Evan (March 2011). "Taming the Wild". National Geographic. Archived from the original on February 20, 2011. Retrieved 23 May 2014.
Trut, Lyudmila N. (1999). "Early Canid Domestication: The Farm-Fox Experiment: Foxes bred for tamability in a 40-year experiment exhibit remarkable transformations that suggest an interplay between behavioral genetics and development". American Scientist. 87 (2): 160–169. doi:10.1511/1999.2.160. JSTOR27857815. ProQuest215262475.