Nainggolan EM, Purba RR, Purba I. TALI KASIH PEDULI COVID-19 DOSEN DAN MAHASISWA PROGRAM STUDI MANAJEMEN UNIVERSITAS SARI MUTIARA INDONESIA. JAM [Internet]. 2020 Oct. 5 [cited 2026 Jan. 29];1(2):148-52. Available from: https://e-journal.sari-mutiara.ac.id/index.php/JAM/article/view/1393