APA   Click to copy
Dunn, R. R., Colwell, R. K., & Nilsson, C. (2006). The river domain: why are there more species halfway up the river? Ecography, 29, 251–259.

Chicago/Turabian   Click to copy
Dunn, Robert R, Robert K Colwell, and Christer Nilsson. “The River Domain: Why Are There More Species Halfway up the River?” Ecography 29 (2006): 251–259.

MLA   Click to copy
Dunn, Robert R., et al. “The River Domain: Why Are There More Species Halfway up the River?” Ecography, vol. 29, Blackwell Publishing Ltd Copenhagen, 2006, pp. 251–59.

@article{dunn2006a,
  title = {The river domain: why are there more species halfway up the river?},
  year = {2006},
  journal = {Ecography},
  pages = {251--259},
  publisher = {Blackwell Publishing Ltd Copenhagen},
  volume = {29},
  author = {Dunn, Robert R and Colwell, Robert K and Nilsson, Christer}
}