APA   Click to copy
Farrell, M. M., Findley, M. G., & Young, J. (2019). Geographical approaches in the study of terrorism. In The Oxford handbook of terrorism. Oxford University Press.

Chicago/Turabian   Click to copy
Farrell, Megan M, Michael G Findley, and Joseph Young. “Geographical Approaches in the Study of Terrorism.” In The Oxford Handbook of Terrorism. Oxford University Press, 2019.

MLA   Click to copy
Farrell, Megan M., et al. “Geographical Approaches in the Study of Terrorism.” The Oxford Handbook of Terrorism, Oxford University Press, 2019.

@inbook{farrell2019a,
  title = {Geographical approaches in the study of terrorism},
  year = {2019},
  publisher = {Oxford University Press},
  author = {Farrell, Megan M and Findley, Michael G and Young, Joseph},
  booktitle = {The Oxford handbook of terrorism}
}