Longo. From Command to Community. Tufts University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLongo. From Command to Community. Tufts University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLongo. From Command to Community. Tufts University Press.
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