Hotchkiss, Jane (2001). "The jungle of Eden: Kipling, wolf boys, and the colonial imagination". Victorian Literature and Culture. 29 (2): 435–449. doi:10.1017/s1060150301002108. S2CID162409338.
Zingg, Robert M. (1940). "Feral Man and Extreme Cases of Isolation". The American Journal of Psychology. 53 (4): 487–517. doi:10.2307/1417630. JSTOR1417630.
Zingg, Robert M. (1940). "Feral Man and Extreme Cases of Isolation". The American Journal of Psychology. 53 (4): 487–517. doi:10.2307/1417630. JSTOR1417630.
Hotchkiss, Jane (2001). "The jungle of Eden: Kipling, wolf boys, and the colonial imagination". Victorian Literature and Culture. 29 (2): 435–449. doi:10.1017/s1060150301002108. S2CID162409338.