Saksit Simcharoen และ Utis Kutintara. (2008) Ecology of the leopard (Panthera pardus Linn.) in Huai Kha Khaeng Wildlife Sanctuary. Kasetsart University,:ม.ป.ท.Saksit Simcharoen และ Utis Kutintara. 2008. Ecology of the leopard (Panthera pardus Linn.) in Huai Kha Khaeng Wildlife Sanctuary. ม.ป.ท.:Kasetsart University,;Saksit Simcharoen และ Utis Kutintara. Ecology of the leopard (Panthera pardus Linn.) in Huai Kha Khaeng Wildlife Sanctuary. ม.ป.ท.:Kasetsart University, 2008. Print.