Suherna, Kuswandi Arifin, and Patunru Pongky. “Gerakan Peduli Sesama Dan Bakti Sosial Relawan Covid-19 Teknik Mesin Universitas Balikpapan Di Kelurahan Karang Rejo Kota Balikpapan”. Abdimas Universal 3, no. 1 (April 30, 2021): 38–43. Accessed January 23, 2022. http://abdimasuniversal.uniba-bpn.ac.id/index.php/abdimasuniversal/article/view/111.