APA (7 वां संस्करण) प्रशस्ति पत्र

Oliver, H. M. (1957). Economic opinion and policy in Ceylon. Published for the Duke University Commonwealth-Studies Center.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Oliver, Henry Madison. Economic Opinion and Policy in Ceylon. Durham, North Carolina: Published for the Duke University Commonwealth-Studies Center, 1957.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Oliver, Henry Madison. Economic Opinion and Policy in Ceylon. Published for the Duke University Commonwealth-Studies Center, 1957.

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