Crunden, E., & Hakanson, C. C. (1972). Feasibility study on the production and distribution of school science equipment in the Philippines. UNESCO.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCrunden, Edward, और Cecil Crellin Hakanson. Feasibility Study on the Production and Distribution of School Science Equipment in the Philippines. Manila: UNESCO, 1972.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCrunden, Edward, और Cecil Crellin Hakanson. Feasibility Study on the Production and Distribution of School Science Equipment in the Philippines. UNESCO, 1972.
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