Luluk Anggraini, Eka Nurtia, Almasdi Syahza, and Rm Riadi. “Analisis Dan Potensi Komoditi Unggulan Perkebunan Provinsi Riau (An Analysis and Potential of Leading Commodities of The Riau Province)”. Jurnal Pendidikan Tambusai 6, no. 2 (May 30, 2022): 11057–11066. Accessed March 29, 2024. https://jptam.org/index.php/jptam/article/view/4189.