Παραπομπή σε μορφή APA (7η εκδ.)

United Nations Environmental Programme & World Health Organization. (1992). Urban air pollution in megacities of the world: Earthwatch. Blackwell Publishers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

United Nations Environmental Programme και World Health Organization. Urban Air Pollution in Megacities of the World: Earthwatch. Oxford: Blackwell Publishers, 1992.

Παραπομπή σε μορφή MLA (8th εκδ.)

United Nations Environmental Programme και World Health Organization. Urban Air Pollution in Megacities of the World: Earthwatch. Blackwell Publishers, 1992.