United Nations Environment Programme & Tognetti, S. S. (1995). Poverty and the environment: Reconciling short-term needs with long-term sustainability goals. United Nations Environment Programme.
Chicago Style aipamenaUnited Nations Environment Programme and Sylvia S. Tognetti. Poverty and the Environment: Reconciling Short-term Needs with Long-term Sustainability Goals. Nairobi, Kenya: United Nations Environment Programme, 1995.
MLA aipamenaUnited Nations Environment Programme and Sylvia S. Tognetti. Poverty and the Environment: Reconciling Short-term Needs with Long-term Sustainability Goals. United Nations Environment Programme, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.