Shafer, S. (1997). Writing effective report card comments. Scholastic Professional Books.
Chicago-Zitierstil (17. Ausg.)Shafer, Susan. Writing Effective Report Card Comments. New York: Scholastic Professional Books, 1997.
MLA-Zitierstil (9. Ausg.)Shafer, Susan. Writing Effective Report Card Comments. Scholastic Professional Books, 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.