The Museum of Modern Art <New York, NY>, Ritchie, A. C., Haftmann, W., Hentzen, A., & Lieberman, W. S. (1957). German art of the twentieth century: By Werner Haftmann ; Alfred Hentzen ; William S. Lieberman. Edited by Andrew Carnduff Ritchie. The Museum of Modern Art, New York in collaboration with The City Art Museum of St. Louis, Missouri. Schuster and Schuster.
Chicago-referens (17:e uppl.)The Museum of Modern Art <New York, NY>, Andrew Carnduff Ritchie, Werner Haftmann, Alfred Hentzen, och William S. Lieberman. German Art of the Twentieth Century: By Werner Haftmann ; Alfred Hentzen ; William S. Lieberman. Edited by Andrew Carnduff Ritchie. The Museum of Modern Art, New York in Collaboration with The City Art Museum of St. Louis, Missouri. New York: Schuster and Schuster, 1957.
MLA-referens (8:e uppl.)The Museum of Modern Art <New York, NY>, et al. German Art of the Twentieth Century: By Werner Haftmann ; Alfred Hentzen ; William S. Lieberman. Edited by Andrew Carnduff Ritchie. The Museum of Modern Art, New York in Collaboration with The City Art Museum of St. Louis, Missouri. Schuster and Schuster, 1957.