Rickman. WASP of the Ferry Command. University of North Texas Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRickman. WASP of the Ferry Command. University of North Texas Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRickman. WASP of the Ferry Command. University of North Texas Press.
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