Miller, M., & Lee, M. (1994). Estimation investigations: More than 65 activities to build mathematical reasoning and number sense. Scholastic Professional Books.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Miller, Marcia, و Martin Lee. Estimation Investigations: More than 65 Activities to Build Mathematical Reasoning and Number Sense. New York: Scholastic Professional Books, 1994.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Miller, Marcia, و Martin Lee. Estimation Investigations: More than 65 Activities to Build Mathematical Reasoning and Number Sense. Scholastic Professional Books, 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.