APA (7th ed.) Citation

Morgan, S., & Okerstrom, D. (1992). The endangered earth: Readings for writers. Allyn and Bacon.

Chicago Style (17th ed.) Citation

Morgan, Sarah, and Dennis Okerstrom. The Endangered Earth: Readings for Writers. Boston, MA: Allyn and Bacon, 1992.

MLA (9th ed.) Citation

Morgan, Sarah, and Dennis Okerstrom. The Endangered Earth: Readings for Writers. Allyn and Bacon, 1992.