Cita APA (7a ed.)

Lucas, P., & Gaag, L. v. d. (1991). Principles of expert systems. Addison-Wesley.

Cita Chicago Style (17a ed.)

Lucas, Peter, y Linda van der Gaag. Principles of Expert Systems. Wokingham [etc.]: Addison-Wesley, 1991.

Cita MLA (9a ed.)

Lucas, Peter, y Linda van der Gaag. Principles of Expert Systems. Addison-Wesley, 1991.