Cita APA (7a ed.)

Barker, R. H. (1995). Network segurity: How to plan for it and archive it. [S.n.].

Cita Chicago Style (17a ed.)

Barker, Richard H. Network Segurity: How to Plan for It and Archive It. Nueva York: [S.n.], 1995.

Cita MLA (9a ed.)

Barker, Richard H. Network Segurity: How to Plan for It and Archive It. [S.n.], 1995.