HUTABARAT, M. I.; JUNAIDI, J.; SALEH SITOMPUL. Pelatihan Perhitungan Harga Pokok Produksi Bagi Usaha Raja Burger dan Kebab. Joong-Ki : Jurnal Pengabdian Masyarakat, [S. l.], v. 2, n. 2, p. 386–391, 2023. DOI: 10.56799/joongki.v2i2.1663. Disponível em: https://journal-nusantara.com/index.php/Joong-Ki/article/view/1663. Acesso em: 11 may. 2024.