Kornrat Komalodaka และ Tanom Tiensawangchai. (2009) Factors attracting foreign tourists to Ayutthaya Province. Language Institute, Thammasat University,:ม.ป.ท.Kornrat Komalodaka และ Tanom Tiensawangchai. 2009. Factors attracting foreign tourists to Ayutthaya Province. ม.ป.ท.:Language Institute, Thammasat University,;Kornrat Komalodaka และ Tanom Tiensawangchai. Factors attracting foreign tourists to Ayutthaya Province. ม.ป.ท.:Language Institute, Thammasat University, 2009. Print.