Rumold, R. (2002). The Janus face of the German avant-garde: From expressionism toward postmodernism. Northwestern Univ. Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRumold, Rainer. The Janus Face of the German Avant-garde: From Expressionism Toward Postmodernism. Evanston, ILL: Northwestern Univ. Press, 2002.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRumold, Rainer. The Janus Face of the German Avant-garde: From Expressionism Toward Postmodernism. Northwestern Univ. Press, 2002.
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