PATRAPORN PORNTEPKASEMSANT and SANTI CHAROENPORNPATTANA. (2014) FACTORS THAT AFFECT LABOR PRODUCTIVITY IN CONSTRUCTION PROJECTS. ISEC Press:ม.ป.ท.PATRAPORN PORNTEPKASEMSANT and SANTI CHAROENPORNPATTANA. 2014. FACTORS THAT AFFECT LABOR PRODUCTIVITY IN CONSTRUCTION PROJECTS. ม.ป.ท.:ISEC Press;PATRAPORN PORNTEPKASEMSANT and SANTI CHAROENPORNPATTANA. FACTORS THAT AFFECT LABOR PRODUCTIVITY IN CONSTRUCTION PROJECTS. ม.ป.ท.:ISEC Press, 2014. Print.