Pettengill. Taking It to the Bridge. University of Michigan Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPettengill. Taking It to the Bridge. University of Michigan Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPettengill. Taking It to the Bridge. University of Michigan Press.
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