APA (7th ed.) Citation

American Telephone and Telegraph Company. (1992). Events in telecommunications history (Revised and reedited.). [AT&T Archives].

Chicago Style (17th ed.) Citation

American Telephone and Telegraph Company. Events in Telecommunications History. Revised and reedited. [Warren, N.J.]: [AT&T Archives], 1992.

MLA (9th ed.) Citation

American Telephone and Telegraph Company. Events in Telecommunications History. Revised and reedited. [AT&T Archives], 1992.