VIXATHEP, Souksavanh, and Phanhpakit ONPHANHDALA. “ປະສິດທິພາບຂອງການປູກຝັງໃນເຂດທົ່ງພຽງ ແລະ ເນີນສູງໃນ ສປປ ລາວ: Efficiency of Lowland and Upland Farming in Lao PDR”,. Journal of Lao Economics and Business Management 1, no. 1 (August 1, 2013): 18–37. Accessed March 15, 2025. https://feb.nuol.edu.la/journal/index.php/jleb/article/view/54.