Cita APA (7a ed.)

Lozan, J. L., Grabi, H., & Hupfer, P. (2001). Climate of the 21 st century: Changes and risks. s.n..

Cita Chicago Style (17a ed.)

Lozan, Jose L., Hartmut Grabi, y Peter Hupfer. Climate of the 21 St Century: Changes and Risks. Hamburg: s.n., 2001.

Cita MLA (9a ed.)

Lozan, Jose L., et al. Climate of the 21 St Century: Changes and Risks. s.n., 2001.