Amornwan Klankaew และ Natcha Krimjai. (2016) Strengthening of business administration and medium-sized enterprises in export of gems and jewelry industry in Bangkok and vicinity. <i>Journal of Management Science Nakhon Pathom Rajabhat University</i>, <i>3</i>(2), 29-43.Amornwan Klankaew และ Natcha Krimjai. "Strengthening of business administration and medium-sized enterprises in export of gems and jewelry industry in Bangkok and vicinity". Journal of Management Science Nakhon Pathom Rajabhat University 3 (2016):29-43.Amornwan Klankaew และ Natcha Krimjai. Strengthening of business administration and medium-sized enterprises in export of gems and jewelry industry in Bangkok and vicinity. Faculty of Management Science Nakhon Pathom Rajabhat University:ม.ป.ท. 2016.