Sianturi, Advend Sri Rizki, and Sendy Putra Pradana. “Improving Student Understanding through Interactive E-Books on Environmental Education in the Biology Education Study Program at Pattimura University”. 12 Waiheru 11, no. 2 (December 1, 2025): 138–145. Accessed May 19, 2026. https://journal.bdkambon-kemenag.id/index.php/12waiheru/article/view/97.