APA (7th ed.) Citation

Shea, C. P. (1988). Protecting life on earth: Steps to save the ozone layer. Worldwatch Institute.

Chicago Style (17th ed.) Citation

Shea, Cynthia Pollock. Protecting Life on Earth: Steps to Save the Ozone Layer. Washington: Worldwatch Institute, 1988.

MLA (9th ed.) Citation

Shea, Cynthia Pollock. Protecting Life on Earth: Steps to Save the Ozone Layer. Worldwatch Institute, 1988.