Pacharaporn Panomwon Na Ayutthaya และ Sunait Chutintaranond. (2011) Suvarnabhumi in ancient international trade. Chulalongkorn University:ม.ป.ท.Pacharaporn Panomwon Na Ayutthaya และ Sunait Chutintaranond. 2011. Suvarnabhumi in ancient international trade. ม.ป.ท.:Chulalongkorn University;Pacharaporn Panomwon Na Ayutthaya และ Sunait Chutintaranond. Suvarnabhumi in ancient international trade. ม.ป.ท.:Chulalongkorn University, 2011. Print.