Tang Thi Tra My และ Donn Pjongluck. (2014) A study of internal and external constraints affecting the business development of sme in baclieu province, vietnam. Stamford international university:ม.ป.ท.Tang Thi Tra My และ Donn Pjongluck. 2014. A study of internal and external constraints affecting the business development of sme in baclieu province, vietnam. ม.ป.ท.:Stamford international university;Tang Thi Tra My และ Donn Pjongluck. A study of internal and external constraints affecting the business development of sme in baclieu province, vietnam. ม.ป.ท.:Stamford international university, 2014. Print.