APA-čujuhus (7. p.)
Duff, C., & Stamford, P. (1960). German for beginners: By Charles Duff and Paul Stamford. Barnes and Noble.
Chicago-čujuhus (17. p.)
Duff, Charles, juo Paul Stamford. German for Beginners: By Charles Duff and Paul Stamford. New York: Barnes and Noble, 1960.
MLA-čujuhus (9. p.)
Duff, Charles, juo Paul Stamford. German for Beginners: By Charles Duff and Paul Stamford. Barnes and Noble, 1960.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.