APA (7th ed.) Citation

Townsend, C., & Feucht, D. (1986). Designing and programming personal expert systems. TAB Books.

Chicago Style (17th ed.) Citation

Townsend, Carl, and Dennis Feucht. Designing and Programming Personal Expert Systems. Blue Ridge Summit, PA: TAB Books, 1986.

MLA (9th ed.) Citation

Townsend, Carl, and Dennis Feucht. Designing and Programming Personal Expert Systems. TAB Books, 1986.