1. Abhichart N.(1993).Phrutikam kanluaktang khong prachchon nai phuenti khet Meanburi [Voting behavior of Meanburi citizens](M.A. thesis). Ramkhamhaeng University.
2. Akarawit K.(1996).Nakthurakit phumipak kap kanmeesuanruam thang kanmueang: Suksa Khonkhan [Regional businessmen and political participation: Khonkhan province case study](M.A. thesis). Thamasat University.
3. Albritton R. B. &Bureekul T.(2002). Civil Society and the Consolidation of Democracy in Thailand (ABS Working Paper Series No. 04). Taipei: National Taiwan University and Academia Sinica Asian Barometer Project Office.
4. 5. Developing Democracy Under a New Constitution in Thailand