APA stil citiranja

Helmers, S. A. (1989). Data communications: Data communications : a beginner's guide to concepts and technology. Englewood Cliffs, N.J.: Prentice Hall.

Chicago stil citiranja

Helmers, Scott A. Data communications: Data communications : a beginner's guide to concepts and technology. Englewood Cliffs, N.J.: Prentice Hall, 1989.

MLA stil citiranja

Helmers, Scott A. Data communications: Data communications : a beginner's guide to concepts and technology. Englewood Cliffs, N.J.: Prentice Hall, 1989.