APA
Chazdon, R. L., Colwell, R. K., & Denslow, J. S. (1999). Tropical tree richness and resource-based niches. Science, 285, 1459–1459.
Chicago/Turabian
Chazdon, Robin L, Robert K Colwell, and Julie S Denslow. “Tropical Tree Richness and Resource-Based Niches.” Science 285 (1999): 1459–1459.
MLA
Chazdon, Robin L., et al. “Tropical Tree Richness and Resource-Based Niches.” Science, vol. 285, American Association for the Advancement of Science, 1999, pp. 1459–59.