Henry, S. L. (1989). Paul Klee's pictorial mechanics from physics to the picture plane. Pantheon.
Chicago-Zitierstil (17. Ausg.)Henry, Sara Lynn. "Paul Klee's Pictorial Mechanics from Physics to the Picture Plane." Pantheon 1989.
MLA-Zitierstil (8. Ausg.)Henry, Sara Lynn. "Paul Klee's Pictorial Mechanics from Physics to the Picture Plane." Pantheon, 1989.
警告：这些引文格式不一定是100％准确.