Ridwanto, Sihat, Zainuddin Zainuddin, & Anton Sinaga. " THE EFFECT OF TEACHER'S WORKLOAD AND MOTIVATION ON TEACHER'S WORK PERFORMANCE IN SMK NEGERI 1 RANTAU UTARA." JURNAL PROINTEGRITA [Online], 3.3 (2019): 455-460. Web. 5 Apr. 2025