Lain และผู้แต่งคนอื่นๆ. (2001) Assessing factors and their relationships affecting acute respiratory infection in children under five at the National Pediatric Hospital, Phnom Penh, Cambodia. Chulalongkorn University:ม.ป.ท.Lain และผู้แต่งคนอื่นๆ. 2001. Assessing factors and their relationships affecting acute respiratory infection in children under five at the National Pediatric Hospital, Phnom Penh, Cambodia. ม.ป.ท.:Chulalongkorn University;Lain และผู้แต่งคนอื่นๆ. Assessing factors and their relationships affecting acute respiratory infection in children under five at the National Pediatric Hospital, Phnom Penh, Cambodia. ม.ป.ท.:Chulalongkorn University, 2001. Print.