D'Angelo, J. P., & West, D. B. (2000). Mathematical thinking: Problem-solving and proofs (2nd ed.). Prentice-Hall.
Chicago Style (17th ed.) CitationD'Angelo, John P., and Douglas Brent West. Mathematical Thinking: Problem-solving and Proofs. 2nd ed. Upper Saddle River, N.J: Prentice-Hall, 2000.
MLA (9th ed.) CitationD'Angelo, John P., and Douglas Brent West. Mathematical Thinking: Problem-solving and Proofs. 2nd ed. Prentice-Hall, 2000.
Warning: These citations may not always be 100% accurate.