Hagenberg, R. (1989). Karel Appel: Dupe of Being / Edited by Roland Hagenberg. Ed. Lafayette.
Chicago-Zitierstil (17. Ausg.)Hagenberg, Roland. Karel Appel: Dupe of Being / Edited by Roland Hagenberg. o.O.: Ed. Lafayette, 1989.
MLA-Zitierstil (8. Ausg.)Hagenberg, Roland. Karel Appel: Dupe of Being / Edited by Roland Hagenberg. Ed. Lafayette, 1989.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.