Keenan, E. L. (1971). The Kurbskii-Groznyi Apocrypha: The Seventeenth-Century Genesis of the "Correspondence" Attributed to Prince A. M. Kurbskii and Tsar Ivan IV. Harvard University Press. https://doi.org/10.4159/harvard.9780674181724
Chicago-Zitierstil (17. Ausg.)Keenan, Edward L. The Kurbskii-Groznyi Apocrypha: The Seventeenth-Century Genesis of the "Correspondence" Attributed to Prince A. M. Kurbskii and Tsar Ivan IV. Cambridge, Mass: Harvard University Press, 1971. https://doi.org/10.4159/harvard.9780674181724.
MLA-Zitierstil (9. Ausg.)Keenan, Edward L. The Kurbskii-Groznyi Apocrypha: The Seventeenth-Century Genesis of the "Correspondence" Attributed to Prince A. M. Kurbskii and Tsar Ivan IV. Harvard University Press, 1971. https://doi.org/10.4159/harvard.9780674181724.