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