Rusdayani, Fina, Roza Yulida, and Eri Sayamar. “Communication Analysis of Swadaya Rubber Farmers in Subdistrict XIII Koto Kampar, Kampar District”. Journal of Agribusiness and Community Empowerment 2, no. 2 (September 25, 2019): 76–90. Accessed June 14, 2021. https://jurnalpolitanipyk.ac.id/index.php/JACE/article/view/76.