Rasyid, Rusman, et al. “Validity of Environmental Education E-Module Based on Education for Sustainable Development Using Flipcreator Platform to Develop Environmental Awareness in Geography Education Students at Khairun University”. Journal of Applied Science, Engineering, Technology, and Education, vol. 6, no. 2, Dec. 2024, pp. 105-17, doi:10.35877/454RI.asci3093.