Tampubolon F, Pasaribu NK, Aritonang RS. Tradisi Mangupa-Upa Pada Masyarakat Batak Toba. jptam [Internet]. 2024 Jun. 25 [cited 2025 May 15];8(2):25607-16. Available from: http://jptam.org/index.php/jptam/article/view/16135