APA (7th ed.) Citation

Langley, G., & Ronayne, J. (1993). Telecommunications primer / Graham Langley (4th ed.). Pitman.

Chicago Style (17th ed.) Citation

Langley, Graham, and John Ronayne. Telecommunications Primer / Graham Langley. 4th ed. London: Pitman, 1993.

MLA (9th ed.) Citation

Langley, Graham, and John Ronayne. Telecommunications Primer / Graham Langley. 4th ed. Pitman, 1993.

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