APA (7th ed.) Citation

Lee , W. L. (2003). Web-based sale and purchase online product catalogue and ordering system (OPCOS) / Lee Wai Lin.

Chicago Style (17th ed.) Citation

Lee , Wai Lin. Web-based Sale and Purchase Online Product Catalogue and Ordering System (OPCOS) / Lee Wai Lin. 2003.

MLA (9th ed.) Citation

Lee , Wai Lin. Web-based Sale and Purchase Online Product Catalogue and Ordering System (OPCOS) / Lee Wai Lin. 2003.

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