Saad, S., Abdullah, M. Y., Salman, A., & Lyndon, N. (2018). Ciri dan Pengaruh Pemimpin Pendapat Dalam Kalangan Pekebun Kecil Kelapa Sawit: The Characteristics and Influence of Opinion Leaders on the Palm Oil Smallholders. GEOGRAFI, 6(3), 44–53. Retrieved from https://ejournal.upsi.edu.my/index.php/GEOG/article/view/2100