Pushparajah. (1982). The oil palm in agriculture in the eighties volume I. The Incorporated Society of Planters.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPushparajah. The Oil Palm in Agriculture in the Eighties Volume I. The Incorporated Society of Planters, 1982.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPushparajah. The Oil Palm in Agriculture in the Eighties Volume I. The Incorporated Society of Planters, 1982.
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