Philippines. Department of Public Works, Transportation and Communications, & Planning and Project Development Office. (1975). Compilation reports of transport sector. DPWTC.
Chicago-referens (17:e uppl.)Philippines. Department of Public Works, Transportation and Communications, och Planning and Project Development Office. Compilation Reports of Transport Sector. Manila: DPWTC, 1975.
MLA-referens (9:e uppl.)Philippines. Department of Public Works, Transportation and Communications, och Planning and Project Development Office. Compilation Reports of Transport Sector. DPWTC, 1975.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.