APA (7th ed.) Citation

Hopfenmüller, A., Opp, A., & Hey, M. (1994). Barbie: Pin-up in der Puppenstube. WDR [u.a.].

Chicago Style (17th ed.) Citation

Hopfenmüller, Annette, Alexander Opp, and Monika Hey. Barbie: Pin-up in Der Puppenstube. [Köln]: WDR [u.a.], 1994.

MLA (9th ed.) Citation

Hopfenmüller, Annette, et al. Barbie: Pin-up in Der Puppenstube. WDR [u.a.], 1994.