Goleman, Michael J. (2011). "Wave of Mutilation: The Cattle Mutilation Phenomenon of the 1970s". Agricultural History. 85 (3): 398–417. doi:10.3098/ah.2011.85.3.398. PMID21901905.
Goleman, Michael J. (2011). "Wave of Mutilation: The Cattle Mutilation Phenomenon of the 1970s". Agricultural History. 85 (3): 398–417. doi:10.3098/ah.2011.85.3.398. PMID21901905.