Johnson, E. R. (1905). Insurance. American Academy of Political and Social Science.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJohnson, Emory R. Insurance. Philadelphia: American Academy of Political and Social Science, 1905.
एमएलए (9वां संस्करण) प्रशस्ति पत्रJohnson, Emory R. Insurance. American Academy of Political and Social Science, 1905.
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