APA
Koh, L. P., Dunn, R. R., Sodhi, N. S., Colwell, R. K., Proctor, H. C., & Smith, V. S. (2004). Species coextinctions and the biodiversity crisis. Science, 305, 1632–1634.
Chicago/Turabian
Koh, Lian Pin, Robert R Dunn, Navjot S Sodhi, Robert K Colwell, Heather C Proctor, and Vincent S Smith. “Species Coextinctions and the Biodiversity Crisis.” science 305 (2004): 1632–1634.
MLA
Koh, Lian Pin, et al. “Species Coextinctions and the Biodiversity Crisis.” Science, vol. 305, American Association for the Advancement of Science, 2004, pp. 1632–34.