Yamada, Munemi (1957). "A case of acculturation in a subhuman society of Japanese monkeys". Primates. 1 (1): 30–46. doi:10.1007/bf01667197. S2CID12775016.
Itani, Junichiro (1958). "On the acquisition and propagation of a new food habit in the natural group of the Japanese monkey at Takasaki - Yama". Primates. 1 (2): 84–98. doi:10.1007/bf01813697. S2CID45013953.
Yamada, Munemi (1957). "A case of acculturation in a subhuman society of Japanese monkeys". Primates. 1 (1): 30–46. doi:10.1007/bf01667197. S2CID12775016.
Itani, Junichiro (1958). "On the acquisition and propagation of a new food habit in the natural group of the Japanese monkey at Takasaki - Yama". Primates. 1 (2): 84–98. doi:10.1007/bf01813697. S2CID45013953.