Chatrudee Atsavakovith และ Thitisak Boonpramote. (2010) A study of petroleum fiscal system for undeveloped reserves in Thailand. Chulalongkorn University:ม.ป.ท.Chatrudee Atsavakovith และ Thitisak Boonpramote. 2010. A study of petroleum fiscal system for undeveloped reserves in Thailand. ม.ป.ท.:Chulalongkorn University;Chatrudee Atsavakovith และ Thitisak Boonpramote. A study of petroleum fiscal system for undeveloped reserves in Thailand. ม.ป.ท.:Chulalongkorn University, 2010. Print.