Chantheng Meak และ Walai Isarankura Na Ayudhaya. (2009) Proposed guidelines for utilizing community learning resources in social studies instruction in secondary schools : a case study of Kampong Thom Province, Kingdom of Cambodia. Chulalongkorn University:ม.ป.ท.Chantheng Meak และ Walai Isarankura Na Ayudhaya. 2009. Proposed guidelines for utilizing community learning resources in social studies instruction in secondary schools : a case study of Kampong Thom Province, Kingdom of Cambodia. ม.ป.ท.:Chulalongkorn University;Chantheng Meak และ Walai Isarankura Na Ayudhaya. Proposed guidelines for utilizing community learning resources in social studies instruction in secondary schools : a case study of Kampong Thom Province, Kingdom of Cambodia. ม.ป.ท.:Chulalongkorn University, 2009. Print.