O. Melawati, E. Evendi, A. . Halim, Y. Yusrizal, and E. Elisa, “The Influence of the Use of Student Worksheet Problem-Based to Increase Problem Solving Skills and Learning Outcomes”, jppipa, pendidikan ipa, fisika, biologi, kimia, vol. 8, no. 1, pp. 346–355, Jan. 2022.