Sumarmi, Sumarmi, Neni Wahyuningtyas, Alfi Sahrina, and Muhammad Aliman. “The Effect of Environmental Volunteer Integrated With Service Learning (EV_SL) to Improve student’s Environment Care Attitudes and Soft Skills”. Pegem Journal of Education and Instruction 12, no. 1 (January 2, 2022): 168–176. Accessed September 30, 2025. https://www.pegegog.net/index.php/pegegog/article/view/1518.