Apriyani, T. D., Fadiawati, N., & Syamsuri, M. M. F. (2019). The Effectiveness of Problem-Based Learning on the Hoax Informations to Improve Students’ Critical Thinking Skills (Related to Some Foods and Beverages). IJCER (International Journal of Chemistry Education Research), 3(1), 15–22. https://doi.org/10.20885/ijcer.vol3.iss1.art3