↑ Wilson, Andrew (2015). The Ukrainians: Unexpected Nation (ภาษาEnglish) (4th ed.). New Haven and London: Yale University Press. p. 119. ISBN978-0-300-21725-4.{{cite book}}: CS1 maint: unrecognized language (ลิงก์)
↑ Plokhy, Serhii (2015). The Gates of Europe. New York: Basic Books. p. 115. ISBN978-0-465-07394-8.
↑ Wilson, Andrew (2015). The Ukrainians: Unexpected Nation (ภาษาEnglish) (4th ed.). New Haven and London: Yale University Press. p. 142. ISBN978-0-300-21725-4.{{cite book}}: CS1 maint: unrecognized language (ลิงก์)
↑ Plokhy, Serhii (2015). The Gates of Europe. New York: Basic Books. p. 125. ISBN978-0-465-07394-8.