Saragih, M.H. et al. 2021. Pengaruh Kepemimpinan Servant dan Kepemimpinan Transformasional Terhadap Organizational Citizenship Behavior (OCB). Business Economic, Communication, and Social Sciences Journal (BECOSS). 3, 1 (Jan. 2021), 33–42. DOI:https://doi.org/10.21512/becossjournal.v3i1.6924.