Haftmann, W., Hentzen, A., Lieberman, W. S., & Ritchie, A. C. (1972). German art of the twentieth century. New York: Published for the Museum of Modern Art by Arno Press.
Παραπομπή Chicago StyleHaftmann, Werner, Alfred Hentzen, William S. Lieberman, and Andrew Carnduff Ritchie. German Art of the Twentieth Century. New York: Published for the Museum of Modern Art by Arno Press, 1972.
Παραπομπή MLAHaftmann, Werner, Alfred Hentzen, William S. Lieberman, and Andrew Carnduff Ritchie. German Art of the Twentieth Century. New York: Published for the Museum of Modern Art by Arno Press, 1972.
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