Asher, J. A. (1973). The framework of German: For schools and universities (11th ed.). Whitcombe and Tombs.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAsher, John Alexander. The Framework of German: For Schools and Universities. 11th ed. Christchurch: Whitcombe and Tombs, 1973.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAsher, John Alexander. The Framework of German: For Schools and Universities. 11th ed. Whitcombe and Tombs, 1973.
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