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 (Aug. 2025), 445-461. DOI:https://doi.org/10.51214/biis.v4i2.1571.