Stan. The Art of Distances. Northwestern University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStan. The Art of Distances. Northwestern University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रStan. The Art of Distances. Northwestern University Press.
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