D'Angelo, J. P., & John P. D'Angelo; Douglas Brent West. (2000). Mathematical thinking: Problem-solving and proofs. Upper Saddle River, NJ: Prentice Hall.
استشهاد بنمط شيكاغوD'Angelo, John P., و John P. D'Angelo; Douglas Brent West. Mathematical Thinking: Problem-solving and Proofs. Upper Saddle River, NJ: Prentice Hall, 2000.
MLA استشهادD'Angelo, John P., و John P. D'Angelo; Douglas Brent West. Mathematical Thinking: Problem-solving and Proofs. Upper Saddle River, NJ: Prentice Hall, 2000.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.