Kutz, R. E. (1991). Teaching elementary mathematics: An active approach. Allyn and Bacon.
Chicago-referens (17:e uppl.)Kutz, Ronald E. Teaching Elementary Mathematics: An Active Approach. Boston: Allyn and Bacon, 1991.
MLA-referens (9:e uppl.)Kutz, Ronald E. Teaching Elementary Mathematics: An Active Approach. Allyn and Bacon, 1991.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.