E.g., Walker, J. & C. "Turkey II: Containing the Northern Part of Greece." Published 1 November 1829 by Baldwin & Cradock, 47 Paternoster Row, London. (London: Chapman & Hall, 1844). Accessed 24 August 2011.
Kallivretakis, Leonidas (1995). "Η ελληνική κοινότητα της Αλβανίας υπό το πρίσμα της ιστορικής γεωγραφίας και δημογραφίας [The Greek Community of Albania in terms of historical geography and demography."[ https://helios-eie.ekt.gr/EIE/handle/10442/8696] In Nikolakopoulos, Ilias, Kouloubis Theodoros A. & Thanos M. Veremis (eds). Ο Ελληνισμός της Αλβανίας [The Greeks of Albania]. University of Athens. p. 34.
Pettifer, James. The Greek Minority in Albania – In the Aftermath of Communism. Conflict Studies Research Center, July 2001 20 June 2009 at files.ethz.ch ISBN 1-903584-35-3 – p. 11