Wiroj Lakkhanaadisorn. (2014) The Valuation of Heritage Interpretation for Conservation and Sustainable Tourism: A Case Study of the Historic City of Ayutthaya. <i>NIDA Development Journal</i>, <i>54</i>(2), 85-116.Wiroj Lakkhanaadisorn. "The Valuation of Heritage Interpretation for Conservation and Sustainable Tourism: A Case Study of the Historic City of Ayutthaya". NIDA Development Journal 54 (2014):85-116.Wiroj Lakkhanaadisorn. The Valuation of Heritage Interpretation for Conservation and Sustainable Tourism: A Case Study of the Historic City of Ayutthaya. National Institute of Development Administration:ม.ป.ท. 2014.