Não informado. (1955). Public Relations Quarterly. Public Relations Quarterly.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Public Relations Quarterly. Rhinebeck, NJ: Public Relations Quarterly, 1955.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Public Relations Quarterly. Public Relations Quarterly, 1955.
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