Masood Khawaja (6 October 2001). "Definition of Halal". Halal Food Authority. Archived from the original on 27 April 2009. Retrieved 2011-10-24.
books.google.com
Rushen, Jeffrey; de Passile, Anne Marie; von Keyserlingk, Marina A.G.; et al., eds. (2008). The Welfare of Cattle. Dordrecht, The Netherlands: Springer. p. 140. ISBN9781402065583.
chabad.org
"Is Shechita Humane?". Dr. Temple Grandin, Dr. Flemming Bager. Chabad.org. Retrieved 2014-04-22.
Schulze W, Schultze-Petzold H, Hazem AS, Gross R. Experiments for the objectification of pain and consciousness during conventional (captive bolt stunning) and religiously mandated ("ritual cutting") slaughter procedures for sheep and calves. Deutsche Tierärztliche Wochenschrift 1978 Feb 5;85(2):62–66. English translation by Dr Sahib M. Bleher