Abuzo, A. A., Sigua, R. G., & Vergel, K. N. (2004). Development of drive cycle and emission concentration models for in-use tricycles in Metro Manila. Philippine Engineering Journal.
Chicago Style (17th ed.) CitationAbuzo, Anabel A., Ricardo G. Sigua, and Karl N. Vergel. "Development of Drive Cycle and Emission Concentration Models for In-use Tricycles in Metro Manila." Philippine Engineering Journal 2004.
MLA (9th ed.) CitationAbuzo, Anabel A., et al. "Development of Drive Cycle and Emission Concentration Models for In-use Tricycles in Metro Manila." Philippine Engineering Journal, 2004.
Warning: These citations may not always be 100% accurate.