O´Connel, S., & SanGiovanni, . J. Mastering the basic math facts in addition and subtraction: Strategies, activities interventions to nove students beyond memorization.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)O´Connel, Susan, و John SanGiovanni. Mastering the Basic Math Facts in Addition and Subtraction: Strategies, Activities Interventions to Nove Students Beyond Memorization.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)O´Connel, Susan, و John SanGiovanni. Mastering the Basic Math Facts in Addition and Subtraction: Strategies, Activities Interventions to Nove Students Beyond Memorization.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.