Syahrial Arif Hutagalung, Gatot Teguh Arifyanto, Fauzan Ghafur, Rika Githamala Ginting and Yessi Kurnia Arjani Manik (2025) “Islamization in Haminjon: A Study of Business Morality in Batak Entrepreneurial Networks”, Bulletin of Indonesian Islamic Studies, 4(2), pp. 445-461. doi: 10.51214/biis.v4i2.1571.