APA (7th ed.) Citation

Williams, P. D., & McDonald, M. (2023). Security studies : an introduction: An introduction (4th edition.). Routledge.

Chicago Style (17th ed.) Citation

Williams, Paul D., and Matt McDonald. Security Studies : An Introduction: An Introduction. 4th edition. London: Routledge, 2023.

MLA (9th ed.) Citation

Williams, Paul D., and Matt McDonald. Security Studies : An Introduction: An Introduction. 4th edition. Routledge, 2023.

Warning: These citations may not always be 100% accurate.