Prevention of Deterioration Center (U.S.). Prevention of deterioration advance list. Prevention of Deterioration Center, National Research Council.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPrevention of Deterioration Center (U.S.). Prevention of Deterioration Advance List. Washington, D.C.: Prevention of Deterioration Center, National Research Council.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPrevention of Deterioration Center (U.S.). Prevention of Deterioration Advance List. Prevention of Deterioration Center, National Research Council.
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