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(02), pp. 2180–2198. Available at: https://edujavare.com/index.php/jcpa/article/view/1890 (Accessed: 13 September 2026).