“THE ECONOMIC VALUATION OF AREN (Arenga pinnata MERR) AT KIYAP JAYA VILLAGE BANDAR SEIKIJANG DISTRICT PELALAWAN REGENCY RIAU PROVINCE”, Universitas Riau, vol. 6, no. 1, pp. 16–23, Feb. 2022, doi: 10.31258/jiik.6.1.16-23.