Thi Kim Oanh, Nguyen, 		Minh Thu, Nguyen, 		Thi Ngoc Thuy, Doan, 		Thi Thu Trang, Nguyen, AND 		Hai Nui, Nguyen.
" Livelihood Activities of Ethnic Minorities  in Cao Bang Province: Case Study  in Nam Tuan Commune, Hoa An District" <em>VNU Journal of Science: Policy and Management Studies</em> [Online], Volume 38 Number 4 (18 December 2022)