Cita APA (7a ed.)

Summers, C. K. (1995). ISDN implementor's guide: Standards, protocols, & services. McGraw-Hill.

Cita Chicago Style (17a ed.)

Summers, Charles K. ISDN Implementor's Guide: Standards, Protocols, & Services. New York: McGraw-Hill, 1995.

Cita MLA (8a ed.)

Summers, Charles K. ISDN Implementor's Guide: Standards, Protocols, & Services. McGraw-Hill, 1995.