สินหิรัญวิวัฒน์ ก. Single or Sole Proprietorship (in Thai). CJHS [Internet]. 2016 Jun. 30 [cited 2024 Apr. 26];5(1):66-8. Available from: https://so05.tci-thaijo.org/index.php/MFUconnexion/article/view/241357