APA (7th ed.) Citation

Kessler, G. C. (1990). ISDN: Concepts, facilities, and services (2.print.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Kessler, Gary C. ISDN: Concepts, Facilities, and Services. 2.print. New York [u.a.]: McGraw-Hill, 1990.

MLA (9th ed.) Citation

Kessler, Gary C. ISDN: Concepts, Facilities, and Services. 2.print. McGraw-Hill, 1990.