Tampubolon, Alan Parulian, Maruf Tafsin, and Sayed Umar. “Study of Characteristics of Samosir Panorusan Goat in Samosir District”. Randwick International of Social Science Journal 4, no. 1 (January 31, 2023): 67-73. Accessed October 11, 2024. https://www.randwickresearch.com/index.php/rissj/article/view/625.