Troup, R. (2023). Practical determination of the girth increment of trees. Government of India, Calcutta.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTroup, R.S. Practical Determination of the Girth Increment of Trees. Government of India, Calcutta, 2023.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTroup, R.S. Practical Determination of the Girth Increment of Trees. Government of India, Calcutta, 2023.
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