Amistad, F. T. Practices of local governments on traffic signalization of intersections. Philippine Engineering Journal.
Citazione stile Chigago Style (17a edizione)Amistad, Franklyn T. "Practices of Local Governments on Traffic Signalization of Intersections." Philippine Engineering Journal .
Citatione MLA (9a ed.)Amistad, Franklyn T. "Practices of Local Governments on Traffic Signalization of Intersections." Philippine Engineering Journal, .
Attenzione: Queste citazioni potrebbero non essere precise al 100%.