Dobrow. Knocking on Heaven’s Door. University of Massachusetts Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDobrow. Knocking on Heaven’s Door. University of Massachusetts Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDobrow. Knocking on Heaven’s Door. University of Massachusetts Press.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.