Ulandari, Ni Wayan, et al. “Systematic Literature Review: Efektivitas E-Modul Interaktif Berbasis Google Sites Dalam Model Problem Based Learning Terhadap Motivasi Belajar Siswa”. Didaktika: Jurnal Kependidikan, vol. 15, no. 4 November, Nov. 2026, pp. 5233-48, https://doi.org/10.58230/27454312.5088.