Cita APA (7a ed.)

Friederich, S., & Gargano, M. (1989). Expert systems design and development using VP-expert. John Wiley & Sons.

Cita Chicago Style (17a ed.)

Friederich, Sylvia, y Michael Gargano. Expert Systems Design and Development Using VP-expert. New York [etc.]: John Wiley & Sons, 1989.

Cita MLA (9a ed.)

Friederich, Sylvia, y Michael Gargano. Expert Systems Design and Development Using VP-expert. John Wiley & Sons, 1989.