Yamashita, Ph.D, Shoichi. 2003. “ການພັດທະນາຊັບພະຍາກອນມະນຸດໂດຍຜ່ານການລົງທຶນໂດຍກົງ: Human Resource Development through Foregige Direct Investment”. Journal of Lao Economics and Business Management 1 (1):1-6. https://feb.nuol.edu.la/journal/index.php/jleb/article/view/13.