Burkhardt, S. Poetry and the language of communication: Sigurd Burkhardt. Hopkins : a collection of critical essays.(1966).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBurkhardt, Sigurd. "Poetry and the Language of Communication: Sigurd Burkhardt." Hopkins : A Collection of Critical Essays.(1966) .
एमएलए (8वां संस्करण) प्रशस्ति पत्रBurkhardt, Sigurd. "Poetry and the Language of Communication: Sigurd Burkhardt." Hopkins : A Collection of Critical Essays.(1966), .
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