Klaus, G., Liebscher, H., & Seyferth, H. (1970). Was ist. Was soll. Kybernetik (6. Auflage (44.-63. Tausend).). Urania Verlag.
Citazione stile Chigago Style (17a edizione)Klaus, Georg, Heinz Liebscher, e Hasso Seyferth. Was Ist. Was Soll. Kybernetik. 6. Auflage (44.-63. Tausend). Leipzig ; Jena ; Berlin: Urania Verlag, 1970.
Citatione MLA (8a ed.)Klaus, Georg, et al. Was Ist. Was Soll. Kybernetik. 6. Auflage (44.-63. Tausend). Urania Verlag, 1970.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.