APA (7th ed.) Citation

Siau, K. L. (1990). A visual knowledge query language for the enhanced-ER model.

Chicago Style (17th ed.) Citation

Siau, Keng Leng. A Visual Knowledge Query Language for the Enhanced-ER Model. 1990.

MLA (8th ed.) Citation

Siau, Keng Leng. A Visual Knowledge Query Language for the Enhanced-ER Model. 1990.

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