Valeva, Julia & Nankov, Emil & Graninger, Denver: A Companion to Ancient Thrace, s. 91. Blackwell Companions to the Ancient World. John Wiley & Sons, 2015. ISBN 9781444351040. Teoksen verkkoversio.
Leitch, John: Handbook of the Geography and Statistics of the Church, s. 65. Nide 1. Bosworth & Harrison, 1859. Teoksen verkkoversio.