Sihombing, Vera Ironita Christiani, and Prana Dwija Iswara. “Effects of Project Based Learning Model Assisted by Picture Media on Advertising Text Writing Skills”. International Conference on Elementary Education 4, no. 1 (April 14, 2022): 874-822. Accessed June 12, 2025. https://proceedings.upi.edu/index.php/icee/article/view/2066.