Panjaitan, H., G. Maffett, M., Saragih, J., Mayanta Tarigan, H., & Setiawan, B. (2020). THE INFLUENCE OF MOTIVATION ON WORK PRODUCTIVITY OF EMPLOYEES IN THE SUB-DISTRICT RAYA OFFICE SIMALUNGUN DISTRICT. International Conference on Health Science, Green Economics, Educational Review and Technology, 2, 303–316. https://doi.org/10.54443/ihert.v2i.75