Unkrig, W. A. (2003). Briefe an Berthold Laufer. W. A. Unkrig (1883 - 1956), 133-146.
Chicago Style (17th ed.) CitationUnkrig, Wilhelm A. "Briefe an Berthold Laufer." W. A. Unkrig (1883 - 1956) 2003: 133-146.
MLA (8th ed.) CitationUnkrig, Wilhelm A. "Briefe an Berthold Laufer." W. A. Unkrig (1883 - 1956), 2003, pp. 133-146.
Warning: These citations may not always be 100% accurate.