APA (7th ed.) Zitazioa

Global Environment Facility. (1993). Global monitoring of greenhouse gases including ozone: Project Document.

Chicago Style (17th ed.) Zitazioa

Global Environment Facility. Global Monitoring of Greenhouse Gases Including Ozone: Project Document. 1993.

MLA (9th ed.) Zitazioa

Global Environment Facility. Global Monitoring of Greenhouse Gases Including Ozone: Project Document. 1993.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.