APA   Click to copy
Colwell, R. K. (1985). The evolution of ecology. American Zoologist, 25, 771–777.

Chicago/Turabian   Click to copy
Colwell, Robert K. “The Evolution of Ecology.” American Zoologist 25 (1985): 771–777.

MLA   Click to copy
Colwell, Robert K. “The Evolution of Ecology.” American Zoologist, vol. 25, Oxford University Press, 1985, pp. 771–77.

@article{colwell1985a,
  title = {The evolution of ecology},
  year = {1985},
  journal = {American Zoologist},
  pages = {771--777},
  publisher = {Oxford University Press},
  volume = {25},
  author = {Colwell, Robert K}
}