Wallraff, Charles F.. Karl Jaspers: an introduction to his philosophy / Charles F. Wallraff . - Princeton : Princeton University Press, 1970 . - xvii, 232 p. 21 cm. К.: Бібліогр. : c. 215-219, Index ISBN: 0-691-01971-1 Subjects--Personal Names: Jaspers, Karl 1883-1969