Suyanto, Bagong, Subagyo Adam, y Septi Ariadi. «Welfare and Bargaining Power of Farmers in Bromo-Tengger-Semeru, Agropolitan Area, East Java». Opción 350 (agosto 13, 2019): 1102-1119. Accedido agosto 3, 2025. https://produccioncientifica.luz.edu.ve/index.php/opcion/article/view/30902.