Suprianik and Mariyah Ulfah (2026) “The Effectiveness of the Eco-Pesantren Program in Creating Economic Value Through Green Product Development at Baitul Hikmah Islamic Boarding School, Tempurejo, Jember”, Journal of Creative Power and Ambition (JCPA), 4(2), pp. 2180–2198. doi: 10.70610/jcpa.1890.