APA (7th ed.) Citation

Hardwick, S. (1989). ISDN design: A practical approach. Academic Press.

Chicago Style (17th ed.) Citation

Hardwick, Steve. ISDN Design: A Practical Approach. San Diego: Academic Press, 1989.

MLA (9th ed.) Citation

Hardwick, Steve. ISDN Design: A Practical Approach. Academic Press, 1989.