Cita APA (7a ed.)

Safari Tech Books Online, Adams, C. A., & Lloyd, S. C. (1999). Understanding the Public-Key Infrastructure: Concepts, Standards and Deployment Considerations (1st edition.). Sams.

Cita Chicago Style (17a ed.)

Safari Tech Books Online, Carlisle Author Adams, y Steve Contributor Lloyd. Understanding the Public-Key Infrastructure: Concepts, Standards and Deployment Considerations. 1st edition. [Place of publication not identified]: Sams, 1999.

Cita MLA (9a ed.)

Safari Tech Books Online, et al. Understanding the Public-Key Infrastructure: Concepts, Standards and Deployment Considerations. 1st edition. Sams, 1999.