Kessler, G. C., & Southwick, P. V. (1997). ISDN: Concepts, facilities, and services (3. ed.). McGraw-Hill.
Chicago Style (17th ed.) CitationKessler, Gary C., and Peter V. Southwick. ISDN: Concepts, Facilities, and Services. 3. ed. New York [u.a.]: McGraw-Hill, 1997.
MLA (9th ed.) CitationKessler, Gary C., and Peter V. Southwick. ISDN: Concepts, Facilities, and Services. 3. ed. McGraw-Hill, 1997.
Warning: These citations may not always be 100% accurate.