Vergel, K., & Lidasan, H. S. A study on the state of the transportation environment in Metro Manila. Philippine Engineering Journal.
Chicago Style (17th ed.) CitationVergel, Karl, and Hussein S. Lidasan. "A Study on the State of the Transportation Environment in Metro Manila." Philippine Engineering Journal .
MLA (9th ed.) CitationVergel, Karl, and Hussein S. Lidasan. "A Study on the State of the Transportation Environment in Metro Manila." Philippine Engineering Journal, .
Warning: These citations may not always be 100% accurate.