Putriana and Ahmad Sahputra, C. 2021. The Effect of Discipline and Work Environment on Employee Productivity of Palm Oil Factory (PKS) of PT. Perkebunan Nusantara V Sei. Rokan, Pagaran Tapah Subdistrict, Rokan Hulu Regency, Riau. INTERNATIONAL JOURNAL OF TRENDS IN ACCOUNTING RESEARCH. 2, 2 (Nov. 2021), 193-204.