Fillone, A. M., & Roquel, K. I. D. Z. Mode choice and value of time of inter-island travelers: The case of the Philippines. Philippine Engineering Journal.
Čikaški stil citiranja (17. izdanje)Fillone, Alexis M., i Krister Ian Daniel Z. Roquel. "Mode Choice and Value of Time of Inter-island Travelers: The Case of the Philippines." Philippine Engineering Journal .
MLA način citiranja (9. izdanje)Fillone, Alexis M., i Krister Ian Daniel Z. Roquel. "Mode Choice and Value of Time of Inter-island Travelers: The Case of the Philippines." Philippine Engineering Journal, .
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