Development Academy of the Philippines. (1978). How to develop project feasibility studies. Sinag-Tala for the Development Academy of the Philippines.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDevelopment Academy of the Philippines. How to Develop Project Feasibility Studies. Manila: Sinag-Tala for the Development Academy of the Philippines, 1978.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDevelopment Academy of the Philippines. How to Develop Project Feasibility Studies. Sinag-Tala for the Development Academy of the Philippines, 1978.
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