Innis, R. E. Bühler and his followers: Robert E. Innis. [Semiotik, 2].(1998).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInnis, Robert E. "Bühler and His Followers: Robert E. Innis." [Semiotik, 2].(1998) .
एमएलए (8वां संस्करण) प्रशस्ति पत्रInnis, Robert E. "Bühler and His Followers: Robert E. Innis." [Semiotik, 2].(1998), .
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