Czapski, J., & Sperber, M. (1969). Unmenschliche Erde. Köln [u.a.]: Kiepenheuer & Witsch.
Chicago Style CitationCzapski, Josef, and Manes Sperber. Unmenschliche Erde. Köln [u.a.]: Kiepenheuer & Witsch, 1969.
MLA CitationCzapski, Josef, and Manes Sperber. Unmenschliche Erde. Köln [u.a.]: Kiepenheuer & Witsch, 1969.
Warning: These citations may not always be 100% accurate.