Saputra, H. et al. 2022. Sinkronisasi Pembelajaran Karakter Pondok Pesantren Bahrul Ulum Tambakberas Jombang Dalam Menghadapi Perkembangan Revolusi Industri 4.0. JoEMS (Journal of Education and Management Studies). 5, 2 (Feb. 2022), 51–55. DOI:https://doi.org/10.32764/joems.v5i2.685.