Lynne Williams; Anthony Bryer (1997). «Survey i Trabzon and Gümüşhane Vilayets, Tyrkia, 1992-1994». Dumbarton Oaks Papers (Cambridge: Harvard University Press) 51: 283–289. JSTOR1291767. doi:10.2307/1291767.
jstor.org
Lynne Williams; Anthony Bryer (1997). «Survey i Trabzon and Gümüşhane Vilayets, Tyrkia, 1992-1994». Dumbarton Oaks Papers (Cambridge: Harvard University Press) 51: 283–289. JSTOR1291767. doi:10.2307/1291767.
