Παραπομπή σε μορφή APA (7η εκδ.)

Walters, J., & Nielsen, N. R. (1988). Crafting knowledge-based systems: Expert systems made easy realistic. John Wiley & Sons, Inc.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Walters, John, και Norman R. Nielsen. Crafting Knowledge-based Systems: Expert Systems Made Easy Realistic. New York: John Wiley & Sons, Inc, 1988.

Παραπομπή σε μορφή MLA (8th εκδ.)

Walters, John, και Norman R. Nielsen. Crafting Knowledge-based Systems: Expert Systems Made Easy Realistic. John Wiley & Sons, Inc, 1988.