APA (7th ed.) Citation

Khoo, C. S. G., & Poo, D. C. C. (1994). An Expert System Approach to Online Catalog Subject Searching.

Chicago Style (17th ed.) Citation

Khoo, Christopher S. G., and Danny C. C. Poo. An Expert System Approach to Online Catalog Subject Searching. 1994.

MLA (9th ed.) Citation

Khoo, Christopher S. G., and Danny C. C. Poo. An Expert System Approach to Online Catalog Subject Searching. 1994.

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