Griffiths, J. M., Adams, P. F., & Adams, P. F. (1998). ISDN explained: Worldwide network and applications technology (3rd ed.). Chichester New York: J. Wiley.
Παραπομπή Chicago StyleGriffiths, J. M., P. F. Adams, and P. F. Adams. ISDN Explained: Worldwide Network and Applications Technology. 3rd ed. Chichester New York: J. Wiley, 1998.
Παραπομπή MLAGriffiths, J. M., P. F. Adams, and P. F. Adams. ISDN Explained: Worldwide Network and Applications Technology. 3rd ed. Chichester New York: J. Wiley, 1998.
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