APA   Click to copy
Colwell, R. K., Norse, E. A., Pimentel, D., Sharples, F. E., & Simberloff, D. (1985). Genetic engineering in agriculture. Science, 229, 111–112.

Chicago/Turabian   Click to copy
Colwell, Robert K, Elliott A Norse, David Pimentel, Frances E Sharples, and Daniel Simberloff. “Genetic Engineering in Agriculture.” Science 229 (1985): 111–112.

MLA   Click to copy
Colwell, Robert K., et al. “Genetic Engineering in Agriculture.” Science, vol. 229, American Association for the Advancement of Science, 1985, pp. 111–12.

@article{colwell1985a,
  title = {Genetic engineering in agriculture},
  year = {1985},
  journal = {Science},
  pages = {111--112},
  publisher = {American Association for the Advancement of Science},
  volume = {229},
  author = {Colwell, Robert K and Norse, Elliott A and Pimentel, David and Sharples, Frances E and Simberloff, Daniel}
}