Roatjanasirikan P, Hoy M, Donkwa K. Analysis of Work Efficiency Between Contract Workers and Daily Hired Workers of the Construction Contracting Business in Udon Thani Province. STECOJournal [Internet]. 2023 Dec. 27 [cited 2024 May 19];2(6):63-79. Available from: https://so07.tci-thaijo.org/index.php/STECOJournal/article/view/3910