Thompson, John M.; Christopher J. Ward (2017). Russia: a historical introduction from Kievan Rus' to the present (Eighth ed.). New York, NY: Westview Press. pp. 24–25. ISBN978-0-8133-4985-5. OCLC987591571.
Subtelny, Orest (1994). Ukraine: a history (2nd ed.). Toronto: University of Toronto Press. pp. 33, 47, 59. ISBN0-8020-0591-8. OCLC31610321.
Magocsi, Paul R. (1983). Galicia : a historical survey and bibliographic guide. University of Alberta. Canadian Institute of Ukrainian Studies, Harvard Ukrainian Research Institute. Toronto, Ont.: Published in association with the Canadian Institute of Ukrainian Studies and the Harvard Ukrainian Research Institute by University of Toronto Press. p. 38. ISBN978-1-4426-7513-1. OCLC244766821.