Kusumawati, Irene Mira, and An Nuril Maulida Fauziah. 2020. “VALIDITY AND PRACTICALITY OF STUDENTS WORKSHEETS IN DISASTER MITIGATION THROUGH ROLE-PLAYING METHOD TO TRAIN DISASTER MANAGEMENT”. PENSA: E-JURNAL PENDIDIKAN SAINS 8 (3):209-17. https://ejournal.unesa.ac.id/index.php/pensa/article/view/38392.