Demographic and genetic status of the captive Sumatran tigers (Panthera tigris sumatrae)Zoologischer Garten5–39
Ballou, Jonathan D. and Seidensticker, John. 1983. "Demographic and genetic status of the captive Sumatran tigers (Panthera tigris sumatrae)." In International Tiger Studbook. Seifert, S. and Muller, P., editors. 5–39. Leipzig, Germany: Zoologischer Garten.