Philippines. Department of Public Works, Transportation and Communications, & Planning and Project Development Office. (1972). Pre-feasibility study: Marikina-Infanta road. PPDO.
Chicago Style (17th ed.) CitationPhilippines. Department of Public Works, Transportation and Communications, and Planning and Project Development Office. Pre-feasibility Study: Marikina-Infanta Road. Manila: PPDO, 1972.
MLA引文Philippines. Department of Public Works, Transportation and Communications, and Planning and Project Development Office. Pre-feasibility Study: Marikina-Infanta Road. PPDO, 1972.
警告:這些引文格式不一定是100%准確.