Ledyard, J. (2011). John Ledyard's journey through Russia and Siberia, 1787-1788: The journal and selected letters. University of Wisconsin Press.
Chicago-Zitierstil (17. Ausg.)Ledyard, John. John Ledyard's Journey Through Russia and Siberia, 1787-1788: The Journal and Selected Letters. Madison: University of Wisconsin Press, 2011.
MLA-Zitierstil (9. Ausg.)Ledyard, John. John Ledyard's Journey Through Russia and Siberia, 1787-1788: The Journal and Selected Letters. University of Wisconsin Press, 2011.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.