APA (7th ed.) Citation

Bass, G., Held, U., & Lopez, D. (2012). Geheimagent 24/12. Sauerländer.

Chicago Style (17th ed.) Citation

Bass, Guy, Ursula Held, and David Lopez. Geheimagent 24/12. Mannheim: Sauerländer, 2012.

MLA (9th ed.) Citation

Bass, Guy, et al. Geheimagent 24/12. Sauerländer, 2012.