Jessen, M. (1998). Phonetics and phonology of tense and lax obstruents in German. John Benjamins Pub. Co..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJessen, Michael. Phonetics and Phonology of Tense and Lax Obstruents in German. Amsterdam ; Philadelphia: John Benjamins Pub. Co., 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रJessen, Michael. Phonetics and Phonology of Tense and Lax Obstruents in German. John Benjamins Pub. Co., 1998.
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