YANI KOERNIAWAN, Y. . Strategi Peningkatan Profit Melalui Pengendalian Biaya Kesempatan (Opportunity Cost) pada Kasus Panggilan Jatuh (Drop Call) BTS di Telkomsel, Karawang. Jurnal Sosial Teknologi, [S. l.], v. 1, n. 2, p. 106–116, 2021. DOI: 10.59188/jurnalsostech.v1i2.14. Disponível em: https://sostech.greenvest.co.id/index.php/sostech/article/view/14. Acesso em: 25 nov. 2024.