Regan, T. (2008). Do animals have a right to life? Revista brasileira de direito animal = Brazilian animal rights review Vol. 3, n. 4 (jan./dez. 2008), p. 9-28.
Dyfyniad Arddull ChicagoRegan, Tom. Do Animals Have a Right to Life? Revista brasileira de direito animal = Brazilian animal rights review Vol. 3, n. 4 (jan./dez. 2008), p. 9-28, 2008.
Dyfyniad MLARegan, Tom. Do Animals Have a Right to Life? Revista brasileira de direito animal = Brazilian animal rights review Vol. 3, n. 4 (jan./dez. 2008), p. 9-28, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.