APA (7th ed.) Citation

United Nations Enviroment Programme (UNEP). (1992). The state of the environment (1972-1992): saving our planet: Challenges and hopes. UNEP.

Chicago Style (17th ed.) Citation

United Nations Enviroment Programme (UNEP). The State of the Environment (1972-1992): Saving Our Planet: Challenges and Hopes. Nairobi, Kenya: UNEP, 1992.

MLA (9th ed.) Citation

United Nations Enviroment Programme (UNEP). The State of the Environment (1972-1992): Saving Our Planet: Challenges and Hopes. UNEP, 1992.

Warning: These citations may not always be 100% accurate.