AMMON, U. (2020). The position of the German language in the world. Routledge.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAMMON, Ulrich. The Position of the German Language in the World. Routledge, 2020.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAMMON, Ulrich. The Position of the German Language in the World. Routledge, 2020.
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