APA (7th ed.) Citation

Toon, O. B., & Turco, R. P. (1991). Polar stratospheric clouds and ozone depletion.

Chicago Style (17th ed.) Citation

Toon, Owen B., and Richard P. Turco. Polar Stratospheric Clouds and Ozone Depletion. 1991.

MLA (9th ed.) Citation

Toon, Owen B., and Richard P. Turco. Polar Stratospheric Clouds and Ozone Depletion. 1991.

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