Ekasit Akarachaiyasak. (2007) Ecology and seasonal forage of the Phayre's langur (Trachypithecus phayrei Blyth, 1847) in Phu Khieo Wildlife Sanctuary, Chaiyaphum province. Kasetsart University,:ม.ป.ท.Ekasit Akarachaiyasak. 2007. Ecology and seasonal forage of the Phayre's langur (Trachypithecus phayrei Blyth, 1847) in Phu Khieo Wildlife Sanctuary, Chaiyaphum province. ม.ป.ท.:Kasetsart University,;Ekasit Akarachaiyasak. Ecology and seasonal forage of the Phayre's langur (Trachypithecus phayrei Blyth, 1847) in Phu Khieo Wildlife Sanctuary, Chaiyaphum province. ม.ป.ท.:Kasetsart University, 2007. Print.