Daud, A. (2009). Economic Valuation of Pineapple Cultivation on Peat Soil at the Integrated Agricultural Development Area, Samarahan, Sarawak.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDaud, Adrian. Economic Valuation of Pineapple Cultivation on Peat Soil at the Integrated Agricultural Development Area, Samarahan, Sarawak. 2009.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDaud, Adrian. Economic Valuation of Pineapple Cultivation on Peat Soil at the Integrated Agricultural Development Area, Samarahan, Sarawak. 2009.
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