Lubis, Risa Kartika. “Analysis of Effect of Work Motivation and Job Satisfaction Performance Against Serdang Agricultural Extension Bedagai”. Journal of Management Science (JMAS) 3, no. 1 (January 1, 2020): 19-24. Accessed October 21, 2021. https://exsys.iocspublisher.org/index.php/JMAS/article/view/44.