APA (7th ed.) Citation

Ng, P. H. (1989). Entity-relationship based database management system.

Chicago Style (17th ed.) Citation

Ng, Pik Hwa. Entity-relationship Based Database Management System. 1989.

MLA (8th ed.) Citation

Ng, Pik Hwa. Entity-relationship Based Database Management System. 1989.

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