C. H. Choi, J. T. Purba, N. Sudibjo, und R. Pramono, „DAMPAK PANDEMI COVID-19 TERHADAP MANAJEMEN SEKOLAH MINGGU KOREA DI INDONESIA UNTUK PENGINTEGRASIAN PEMBELAJARAN IMAN [THE IMPACT OF THE COVID-19 PANDEMIC ON THE MANAGEMENT OF FAITH-LEARNING INTEGRATION OF KOREAN SUNDAY SCHOOL IN INDONESIA]“, JOHME, Bd. 5, Nr. 1, S. 61–85, Juni 2021.