Walkden. Private Lives Made Public. Duquesne University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWalkden. Private Lives Made Public. Duquesne University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWalkden. Private Lives Made Public. Duquesne University Press.
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