Sammartino, A. (2010). The impossible border: Germany and the east, 1914-1922. Cornell University Press.
Chicago-čujuhus (17. p.)Sammartino, Annemarie. The Impossible Border: Germany and the East, 1914-1922. Ithaca, New York: Cornell University Press, 2010.
MLA-čujuhus (9. p.)Sammartino, Annemarie. The Impossible Border: Germany and the East, 1914-1922. Cornell University Press, 2010.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.