Schibel, K., Alber, G., & Hanisch, A. (2002). Annual report 2002-2003. Frankfurt am Main: Climate Alliance.
Chicago Style aipamenaSchibel, Karl-Ludwig, Gotelind Alber, and Angela Hanisch. Annual Report 2002-2003. Frankfurt am Main: Climate Alliance, 2002.
MLA aipamenaSchibel, Karl-Ludwig, et al. Annual Report 2002-2003. Frankfurt am Main: Climate Alliance, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.