Robel, G. (1997). German travel reports on Russia and their changing function in the eighteenth century. [s.n.].
Chicago-Zitierstil (17. Ausg.)Robel, Gert. German Travel Reports on Russia and Their Changing Function in the Eighteenth Century. [S.l.]: [s.n.], 1997.
MLA-Zitierstil (9. Ausg.)Robel, Gert. German Travel Reports on Russia and Their Changing Function in the Eighteenth Century. [s.n.], 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.