O´Connel, S., & SanGiovanni, . J. Mastering the basic math facts in addition and subtraction: Strategies, activities interventions to nove students beyond memorization.
Chicago-referens (17:e uppl.)O´Connel, Susan, och John SanGiovanni. Mastering the Basic Math Facts in Addition and Subtraction: Strategies, Activities Interventions to Nove Students Beyond Memorization.
MLA-referens (8:e uppl.)O´Connel, Susan, och John SanGiovanni. Mastering the Basic Math Facts in Addition and Subtraction: Strategies, Activities Interventions to Nove Students Beyond Memorization.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.