1. Small, multigrade schools and increasing access to primary education in India: National context and NGO initiatives;Blum,2007
2. Report of administration and teaching by using multi-grade approach in small schools;Bureau of Academic Affairs and Educational Standards, Office of the Basic Education Commission,2011
3. Educational research: Planning, conducting, and evaluating quantitative and qualitative research;Creswell,2005
4. Development of learning plans on the topic of Mathematics Word Problem-solving for mulitgrade students;Hankaew,2014
5. The learning achievement in health and physical education students of Pratomsuksa 5 and 6 at Bankamnongwang school for students multigrade classrooms;Hongmala,2013