APA (7th ed.) Citation

Trinidad, G. GIS from a computer science perspective. Philippine Computing Journal.

Chicago Style (17th ed.) Citation

Trinidad, Gerardo. "GIS from a Computer Science Perspective." Philippine Computing Journal .

MLA (9th ed.) Citation

Trinidad, Gerardo. "GIS from a Computer Science Perspective." Philippine Computing Journal, .

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