Παραπομπή σε μορφή APA (7η εκδ.)

Ensley, D. E., & Crawley, J. W. (2006). Discrete mathematics: Mathematical reasoning and proof with puzzles, patterns and games. John Wiley & Sons.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ensley, Douglas E., και J. Winston Crawley. Discrete Mathematics: Mathematical Reasoning and Proof with Puzzles, Patterns and Games. Hoboken, N.J: John Wiley & Sons, 2006.

Παραπομπή σε μορφή MLA (8th εκδ.)

Ensley, Douglas E., και J. Winston Crawley. Discrete Mathematics: Mathematical Reasoning and Proof with Puzzles, Patterns and Games. John Wiley & Sons, 2006.