Houngthida Phetsinorath และ Suchittra Chamnivickorn. (2019) Effect of double college major (degree) on earning in Lao PDR. National Institute of Development Administration:ม.ป.ท.Houngthida Phetsinorath และ Suchittra Chamnivickorn. 2019. Effect of double college major (degree) on earning in Lao PDR. ม.ป.ท.:National Institute of Development Administration;Houngthida Phetsinorath และ Suchittra Chamnivickorn. Effect of double college major (degree) on earning in Lao PDR. ม.ป.ท.:National Institute of Development Administration, 2019. Print.