Zon Saroha Ritonga 2022. Analisis Hubungan Komitmen Kerja terhadap Produktivitas Kerja Staf Universitas Nahdlatul Ulama Sumatera Utara (UNUSU) . Multiverse: Open Multidisciplinary Journal. 1, 1 (Apr. 2022), 45–51. DOI:https://doi.org/10.57251/multiverse.v1i1.625.