توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

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

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

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

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

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