APA (7th ed.) Citation

Rigo, R. C., Imbang, P. G., & Cruz, P. E. (2009). Voice over internet protocol in small and medium enterprises. University of the Philippines Diliman.

Chicago Style (17th ed.) Citation

Rigo, Ricardo C., Prof. Glen Imbang, and Prof. Edison Cruz. Voice over Internet Protocol in Small and Medium Enterprises. Quezon City: University of the Philippines Diliman, 2009.

MLA (9th ed.) Citation

Rigo, Ricardo C., et al. Voice over Internet Protocol in Small and Medium Enterprises. University of the Philippines Diliman, 2009.