APA-viite (7. p.)

Lenat, D. B., & Guha, R. V. (1990). Building large knowledge-based systems: Representation and inference in the Cyc project. Addison-Wesley.

Chicago-viite (17. p.)

Lenat, Douglas B., ja R. V. Guha. Building Large Knowledge-based Systems: Representation and Inference in the Cyc Project. Reading, Mass: Addison-Wesley, 1990.

MLA-viite (9. p.)

Lenat, Douglas B., ja R. V. Guha. Building Large Knowledge-based Systems: Representation and Inference in the Cyc Project. Addison-Wesley, 1990.