Burger, W. V. (1935). Teacher's manual for Ditto directed study lessons in American history. Ditto, Inc..
Chicago-Zitierstil (17. Ausg.)Burger, William V. Teacher's Manual for Ditto Directed Study Lessons in American History. Chicago: Ditto, Inc., 1935.
MLA-Zitierstil (8. Ausg.)Burger, William V. Teacher's Manual for Ditto Directed Study Lessons in American History. Ditto, Inc., 1935.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.