Halim, H., Teuku Meldi Kesuma, M. Ridha Siregar, Teuku Muhammad Syahrizal, Khairil Umuri, Dinaroe, Iskandarsyah, Fakhrurrazi, Hamdi Harmen, Ahmad Nizam and Farid 2023. Productivity Improvement Training: Capacity Building For Human Resource Managers In Deli Serdang Regency, Sumatera Utara . Jurnal Pengabdian dan Peningkatan Mutu Masyarakat (Janayu). 4, 3 (Oct. 2023), 250–260. DOI:https://doi.org/10.22219/janayu.v4i3.28196.