APA (7th ed.) Citation

SpringerLink (Online service), Lee, D. T., Shieh, S. P., & Tygar, J. D. (2005). Computer Security in the 21st Century. Springer US.

Chicago Style (17th ed.) Citation

SpringerLink (Online service), D. T. Lee, S. P. Shieh, and J. D. Tygar. Computer Security in the 21st Century. Boston, MA: Springer US, 2005.

MLA (8th ed.) Citation

SpringerLink (Online service), et al. Computer Security in the 21st Century. Springer US, 2005.