APA (7th ed.) Citation

Roysdon, C., & White, H. D. (1989). Expert Systems in Reference Services.

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.