APA (7th ed.) Citation

Denning, P. J. (1991). Threats and countermeasures for network security. Research Institute for Advanced Computer Science, NASA Ames Research Center.

Chicago Style (17th ed.) Citation

Denning, Peter J. Threats and Countermeasures for Network Security. [Moffett Field, California]: Research Institute for Advanced Computer Science, NASA Ames Research Center, 1991.

MLA (9th ed.) Citation

Denning, Peter J. Threats and Countermeasures for Network Security. Research Institute for Advanced Computer Science, NASA Ames Research Center, 1991.