Lua APA (7ú heag.)
ebrary, Inc, & Broecker, M. (2005). Heinz von Foerster: In memorium. Emerald Group Publishing.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Monika Broecker. Heinz Von Foerster: In Memorium. Bradford, England: Emerald Group Publishing, 2005.
Lua MLA (9ú heag.)
ebrary, Inc, agus Monika Broecker. Heinz Von Foerster: In Memorium. Emerald Group Publishing, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.