APA   Click to copy
Leap, B., & Young, J. K. (2021). Radicalization and Deradicalization. In Oxford Research Encyclopedia of International Studies.

Chicago/Turabian   Click to copy
Leap, Bethany, and Joseph K. Young. “Radicalization and Deradicalization.” In Oxford Research Encyclopedia of International Studies, 2021.

MLA   Click to copy
Leap, Bethany, and Joseph K. Young. “Radicalization and Deradicalization.” Oxford Research Encyclopedia of International Studies, 2021.

@inbook{leap2021a,
  title = {Radicalization and Deradicalization},
  year = {2021},
  author = {Leap, Bethany and Young, Joseph K.},
  booktitle = {Oxford Research Encyclopedia of International Studies}
}