Humboldt, A. v. Letters of Alexander von Humboldt to Varnhagen von Ense. From 1827 to 1858. With extracts from Varnhagen's diaries, and letters of Varnhagen and others to Humboldt.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHumboldt, Alexander von. Letters of Alexander Von Humboldt to Varnhagen Von Ense. From 1827 to 1858. With Extracts from Varnhagen's Diaries, and Letters of Varnhagen and Others to Humboldt.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHumboldt, Alexander von. Letters of Alexander Von Humboldt to Varnhagen Von Ense. From 1827 to 1858. With Extracts from Varnhagen's Diaries, and Letters of Varnhagen and Others to Humboldt.
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