Hasby Puarada, Sakral, and Riris Nadia Syafrilia Gurning. “AN ANALYSIS OF MARKETING EFFICIENCY OF BEEF CATTLE BREEDERS PERCUT SEI TUAN DISTRICT, DELI SERDANG REGENCY, NORTH SUMATERA”. Multidiciplinary Output Research For Actual and International Issue (MORFAI) 1, no. 2 (November 22, 2021): 145–154. Accessed June 21, 2025. https://radjapublika.com/index.php/MORFAI/article/view/47.