Philippines. Department of Public Works, Transportation and Communications, & Planning and Project Development Office. (1972). Pre-feasibility study: Marikina-Infanta road. PPDO.
Citace podle Chicago (17th ed.)Philippines. Department of Public Works, Transportation and Communications, a Planning and Project Development Office. Pre-feasibility Study: Marikina-Infanta Road. Manila: PPDO, 1972.
Citace podle MLA (9th ed.)Philippines. Department of Public Works, Transportation and Communications, a Planning and Project Development Office. Pre-feasibility Study: Marikina-Infanta Road. PPDO, 1972.
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