Helmayuni, and Mardianto. “Economic Valuation of ‘Parak’ Traditional Agroforestry West Sumatera (Case Study in Nagari Paninggahan, Solok Regency)”. INFLUENCE: INTERNATIONAL JOURNAL OF SCIENCE REVIEW, vol. 3, no. 3, Dec. 2021, pp. 34-42, doi:10.54783/influencejournal.v3i3.271.