Isba became a Christian bishopric, a suffragan of the metropolitan see of Side, the capital of the Roman province of Pamphylia Prima, to which Isba belonged. No longer a residential bishopric, Isba is today listed by the Catholic Church as a titular see.
- Ramsay, W.M. (March 1888). "Antiquities of Souithern Phrygia and the Border Lands (II)". The American Journal of Archaeology and of the History of the Fine Arts IV (1): 8. Retrieved 22 January 2015.
- William M. Ramsay (1890, 2013). The Historical Geography of Asia Minor. Retrieved January 14, 2015. Check date values in:
- Annuario Pontificio 2013 (Libreria Editrice Vaticana 2013 ISBN 978-88-209-9070-1), pp. 908 and 910
- Catholic Hierarchy
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