Ratchata Phochayavanich และผู้แต่งคนอื่นๆ. (2007) Species diversity and seasonal activity of amphibians at different elevations in Num San Noi Stream at Phuluang Wildlife Sanctuary. Chulalongkorn University:ม.ป.ท.Ratchata Phochayavanich และผู้แต่งคนอื่นๆ. 2007. Species diversity and seasonal activity of amphibians at different elevations in Num San Noi Stream at Phuluang Wildlife Sanctuary. ม.ป.ท.:Chulalongkorn University;Ratchata Phochayavanich และผู้แต่งคนอื่นๆ. Species diversity and seasonal activity of amphibians at different elevations in Num San Noi Stream at Phuluang Wildlife Sanctuary. ม.ป.ท.:Chulalongkorn University, 2007. Print.