Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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