Design, Consultation, Construction and Development Corporation. Economic Development Foundation, & Philippines. Dept. of Public Works, Transportation and Communications. Planning and Project Development Office. (1974). Feasibility study on an integrated bus system of mass transit for Metropolitan Manila: Alternative 1 : one-phase integration schedule. PPDO, DPWTC.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Design, Consultation, Construction and Development Corporation. Economic Development Foundation, و Transportation and Communications. Planning and Project Development Office Philippines. Dept. of Public Works. Feasibility Study on an Integrated Bus System of Mass Transit for Metropolitan Manila: Alternative 1 : One-phase Integration Schedule. Manila: PPDO, DPWTC, 1974.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Design, Consultation, Construction and Development Corporation. Economic Development Foundation, و Transportation and Communications. Planning and Project Development Office Philippines. Dept. of Public Works. Feasibility Study on an Integrated Bus System of Mass Transit for Metropolitan Manila: Alternative 1 : One-phase Integration Schedule. PPDO, DPWTC, 1974.