Foerster, H. v. Circular Causality: The beginnings of an epistemology of responsibility / Heinz von Foerster. Transactions=Protokolle.(2003).
Chicago-referens (17:e uppl.)Foerster, Heinz von. "Circular Causality: The Beginnings of an Epistemology of Responsibility / Heinz Von Foerster." Transactions=Protokolle.(2003) .
MLA-referens (8:e uppl.)Foerster, Heinz von. "Circular Causality: The Beginnings of an Epistemology of Responsibility / Heinz Von Foerster." Transactions=Protokolle.(2003), .
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.