APA (7th ed.) Citation
Hahne, B., & Kassel, H. (1981). Was darf ein Computer? Siemens.
Chicago Style (17th ed.) Citation
Hahne, Bernd, and Hans Kassel. Was Darf Ein Computer? Berlin: Siemens, 1981.
MLA (9th ed.) Citation
Hahne, Bernd, and Hans Kassel. Was Darf Ein Computer? Siemens, 1981.
Warning: These citations may not always be 100% accurate.