A. Permatasari, R. Riandi, and M. N. Kusumastuti, “Development of the Riverkeeper Game Using Canva Application to Teach Ecosystem Topic to High School Students”, J. Penelit. dan. Pengkaj. Ilmu. Pendidik. e-Saintika, vol. 9, no. 2, pp. 446–464, Jul. 2025, doi: 10.36312/e-saintika.v9i2.3215.