1. Travels in northern Greece.   By  William Martin Leake. Vol 1. 1835.  Internet Archive. p 65 - 70         https://archive.org/details/travelsinnorther01leak
2.  Epirus  The Geography, the Ancient Remains, the History and Topography of Epirus and Adjacent Areas    by N. G. L. Hammond. 1967.  Internet Archive.  p. 112  /17     https://archive.org/details/hamepi
3. David Malcolm Lewis,  John Boardman, The Cambridge Ancient History: The Fourth Century B.C. Cambridge, United Kingdom: Cambridge University Press 1994