Cita APA (7a ed.)

Agencia Europea de Medio Ambiente. (2001). Environmental signals 2001. Office for Official Publications of the European Communities.

Cita Chicago Style (17a ed.)

Agencia Europea de Medio Ambiente. Environmental Signals 2001. Luxembourg: Office for Official Publications of the European Communities, 2001.

Cita MLA (9a ed.)

Agencia Europea de Medio Ambiente. Environmental Signals 2001. Office for Official Publications of the European Communities, 2001.