“Efektivitas Model Double Loop Problem Solving Terhadap Sikap Ilmiah Siswa SMA Negeri 7 Purworejo Tahun Pelajaran 2016/2017”, Radiasi, vol. 10, no. 1, pp. 18–23, Sep. 2017, Accessed: Sep. 01, 2026. [Online]. Available: https://jurnal.umpwr.ac.id/index.php/radiasi/article/view/184