Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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