APA (7th ed.) Citation

(1991). Ozone depletion. USM/United Nation Environment Programme.

Chicago Style (17th ed.) Citation

Ozone Depletion. Pulau Pinang: USM/United Nation Environment Programme, 1991.

MLA (9th ed.) Citation

Ozone Depletion. USM/United Nation Environment Programme, 1991.

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