APA   Click to copy
Clapp, J., Desmarais, A., & Margulis, M. (2015). Global food trade.

Chicago/Turabian   Click to copy
Clapp, J., A. Desmarais, and M. Margulis. “Global Food Trade” (2015).

MLA   Click to copy
Clapp, J., et al. Global Food Trade. 2015.

@article{j2015a,
  title = {Global food trade},
  year = {2015},
  author = {Clapp, J. and Desmarais, A. and Margulis, M.}
}