Frykenberg, R. E. (1965). Guntur district 1788-1848: A history of local influence and central authority in South India. Oxford University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFrykenberg, Robert Eric. Guntur District 1788-1848: A History of Local Influence and Central Authority in South India. Oxford University Press, 1965.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFrykenberg, Robert Eric. Guntur District 1788-1848: A History of Local Influence and Central Authority in South India. Oxford University Press, 1965.
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