HASBY PUARADA, S. .; NADIA SYAFRILIA GURNING, R. . 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), [S. l.], v. 1, n. 2, p. 145–154, 2021. DOI: 10.54443/morfai.v1i2.47. Disponível em: https://radjapublika.com/index.php/MORFAI/article/view/47. Acesso em: 21 jun. 2025.