APA (7th ed.) Citation

Scott, C., & Wolfe, P. ;. E. (1998). Virtual private networks. O'reilly Publishers.

Chicago Style (17th ed.) Citation

Scott, Charlie, and Paul ; Erwin Wolfe. Virtual Private Networks. Cambridge: O'reilly Publishers, 1998.

MLA (9th ed.) Citation

Scott, Charlie, and Paul ; Erwin Wolfe. Virtual Private Networks. O'reilly Publishers, 1998.