Barrow, I. J. (2008). Surveying and mapping in colonial Sri Lanka: 1800-1900. Oxford University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBarrow, Ian J. Surveying and Mapping in Colonial Sri Lanka: 1800-1900. Oxford University Press, 2008.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBarrow, Ian J. Surveying and Mapping in Colonial Sri Lanka: 1800-1900. Oxford University Press, 2008.
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