Sulistiyorini, Ayu Asih, et al. “Development and Preliminary Evaluation of PjBL-BasedGoogle Sites for Teaching Advertisements, Slogans,and Posters”. Journal of Nonformal Education, vol. 12, no. 2, Aug. 2026, pp. 434–445, https://doi.org/10.15294/jone.v12i2.44970.