APA (7th ed.) Citation

Naylor, C. (1987). Build your own expert system (2nd ed.). Sigma Press.

Chicago Style (17th ed.) Citation

Naylor, Chris. Build Your Own Expert System. 2nd ed. Wilmslow: Sigma Press, 1987.

MLA (9th ed.) Citation

Naylor, Chris. Build Your Own Expert System. 2nd ed. Sigma Press, 1987.