APA Edition Citation

Kaye, H., Knees, S., & Koopowitz, H. (1990). Plant extinction: A global crisis.

Chicago Edition Citation

Kaye, Hilary, Sabina Knees, and Harold Koopowitz. Plant Extinction: A Global Crisis. London, Christopher Hellm, 1990.

MLA Edition Citation

Kaye, Hilary, et al. Plant Extinction: A Global Crisis. 1990.