APA (7th ed.) Citation

Roysdon, C., & White, H. D. (1989). Expert systems in reference services. Haworth Press.

Chicago Style (17th ed.) Citation

Roysdon, Christine, and Howard D. White. Expert Systems in Reference Services. New York: Haworth Press, 1989.

MLA (9th ed.) Citation

Roysdon, Christine, and Howard D. White. Expert Systems in Reference Services. Haworth Press, 1989.