Henein, M., Azer, S., Khirey, J., Pahor, A., & Isshak, N. (2021). The Infrequently Sung ‘a’ Instead of ‘A’ in ‘Alleluia’ According to the Coptic Tradition. TEACH - Journal of Christian Studies, 1. https://doi.org/10.35995/teach-jcs1010002