Fechner-Smarsly, T., & Binder, U. (1997). Was ist. Salon Verl..
Citazione stile Chigago Style (17a edizione)Fechner-Smarsly, Thomas, e Ursula Binder. Was Ist. Köln: Salon Verl., 1997.
Citatione MLA (8a ed.)Fechner-Smarsly, Thomas, e Ursula Binder. Was Ist. Salon Verl., 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.