Purba, Linda Reni Suriani, and Wahyunita Sitinjak. “CONTRIBUTION OF BEEF CATTLE BUSINESS TO THE INCOME OF FARMERS FAMILY IN SIMALUNGUN REGENCY (CASE STUDY: IN SIMALUNGUN DISTRICT)”. Jurnal Ekonomi 12, no. 02 (May 6, 2023): 1377–1384. Accessed December 5, 2024. https://ejournal.seaninstitute.or.id/index.php/Ekonomi/article/view/1904.