APA (7th ed.) Citation

Donaldson, S. E., Williams, C. K., & Siegel, S. G. (2019). Understanding security issues. Walter De Gruyter Inc..

Chicago Style (17th ed.) Citation

Donaldson, Scott E., Chris K. Williams, and Stanley G. Siegel. Understanding Security Issues. Boston ; Berlin: Walter De Gruyter Inc., 2019.

MLA (8th ed.) Citation

Donaldson, Scott E., et al. Understanding Security Issues. Walter De Gruyter Inc., 2019.