Cita APA

(2000). Air quality guidelines for Europe (Second edition.). World Health Organization Regional Office for Europe.

Citación estilo Chicago

Air Quality Guidelines for Europe. Second edition. Copenhagen, Denmark: World Health Organization Regional Office for Europe, 2000.

Cita MLA

Air Quality Guidelines for Europe. Second edition. World Health Organization Regional Office for Europe, 2000.

Warning: These citations may not always be 100% accurate.