M. R. Tampubolon, A. . Nasution, and H. . Sidabutar, “Pengaruh Model Pembelajaran Problem based learning Berbasis Flipped classroom terhadap Hasil Belajar dan Daya Ingat Siswa Materi Virus Kelas X T.P 2024/2025”, jiip, vol. 8, no. 9, pp. 10428-10434, Sep. 2025.