It was the see of a Christian bishop. Lequien, names only two known bishops of the town. Constantius (fl 431 - 451) and Evander No longer the seat of a residential bishop, it remains a titular see of the Roman Catholic Church as well as the Eastern Orthodox Church (for which it is now a metropolitan titular see, with Kallistos Ware as its metropolitan).
- Richard Talbert, ed. (2000). Barrington Atlas of the Greek and Roman World. Princeton University Press. p. 62, and directory notes accompanying.
- Ptolemy. The Geography. Vol. 5.2.23.
- diocleia, monism.org.
- "Diokleia - Asia Minor Coins - Photo Gallery".
- Barclay Vincent Head, Catalogue of the Greek Coins of Phrygia British Museum. Dept. of Coins and Medals, (order of the Trustees, 1906) page 181.
- W. M. Ramsay, The Cities and Bishoprics of Phrygia The Journal of Hellenic Studies Vol. 4 (1883), pp. 370-436
- Lequien, Or. Christ., I, 823
- Politics and Bishops' Lists at the First Council of Ephesus.
- Richard Price, Michael Gaddis, The Acts of the Council of Chalcedon, Volume 1(Liverpool University Press, 2005) page 335.
- Richard Price, Michael Gaddis The Acts of the Council of Chalcedon, Volume 1(Liverpool University Press, 2005) page 227
- Catholic Hierarchy
- Lund University. Digital Atlas of the Roman Empire.