APA (7th ed.) Citation

Flanagan, W. A. ISDN: A practical guide to getting up and running. CMP Books.

Chicago Style (17th ed.) Citation

Flanagan, William A. ISDN: A Practical Guide to Getting Up and Running. New York: CMP Books.

MLA (9th ed.) Citation

Flanagan, William A. ISDN: A Practical Guide to Getting Up and Running. CMP Books.

Warning: These citations may not always be 100% accurate.