SITOMPUL, Sahat Dapot Tua. The Determination of the Brick Basic Price at Toba Trading Company. International Journal of Advanced Engineering Research and Science, [S. l.], v. 6, n. 9, 2019. Disponível em: https://journal-repository.com/index.php/ijaers/article/view/56.. Acesso em: 25 aug. 2024.