Παραπομπή σε μορφή APA (7η εκδ.)

Lenat, D. B., & Guha, R. (1990). Buildung Large Knowledge-Based Systems: Representation and Inference in the Cyc Project. Addison-Wesley.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Lenat, Douglas B., και R.V Guha. Buildung Large Knowledge-Based Systems: Representation and Inference in the Cyc Project. Reading: Addison-Wesley, 1990.

Παραπομπή σε μορφή MLA (9th εκδ.)

Lenat, Douglas B., και R.V Guha. Buildung Large Knowledge-Based Systems: Representation and Inference in the Cyc Project. Addison-Wesley, 1990.