Global Environment Facility. (1993). Global monitoring of greenhouse gases including ozone: Project Document.
Cita Chicago (17th ed.)Global Environment Facility. Global Monitoring of Greenhouse Gases Including Ozone: Project Document. 1993.
Cita MLA (9th ed.)Global Environment Facility. Global Monitoring of Greenhouse Gases Including Ozone: Project Document. 1993.
Atenció: Aquestes cites poden no estar 100% correctes.