Purba, Elvis Fresly, and Lastri. “IMPLIKASI EKONOMI ULOS HOLONG BAGI PENGANTIN BATAK TOBA: PENDEKATAN UTILITAS DAN BIAYA OPORTUNIS”. Jurnal Manajemen dan Bisnis 22, no. 1 (February 26, 2022): 226–239. Accessed November 23, 2024. https://ejournal.ust.ac.id/index.php/JIMB_ekonomi/article/view/1742.