Παραπομπή σε μορφή APA (7η εκδ.)

(1999). Urban Future: Preparatory expertises (Overviews) for the World Report on Urban Future for the Global Conference on the Urban Future URBAN 21.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Urban Future: Preparatory Expertises (Overviews) for the World Report on Urban Future for the Global Conference on the Urban Future URBAN 21. Bonn, 1999.

Παραπομπή σε μορφή MLA (8th εκδ.)

Urban Future: Preparatory Expertises (Overviews) for the World Report on Urban Future for the Global Conference on the Urban Future URBAN 21. 1999.