APA   Click to copy
Clapp, J., Desmarais, A., & Margulis, M. (2015). Mapping the state of play on the global food landscape.

Chicago/Turabian   Click to copy
Clapp, J., A. Desmarais, and M. Margulis. “Mapping the State of Play on the Global Food Landscape” (2015).

MLA   Click to copy
Clapp, J., et al. Mapping the State of Play on the Global Food Landscape. 2015.

@article{j2015a,
  title = {Mapping the state of play on the global food landscape},
  year = {2015},
  author = {Clapp, J. and Desmarais, A. and Margulis, M.}
}