APA (7th ed.) Citation

American Telephone and Telegraph Company. (1950). For noteworthy public service. [publisher not identified].

Chicago Style (17th ed.) Citation

American Telephone and Telegraph Company. For Noteworthy Public Service. [New York?]: [publisher not identified], 1950.

MLA (9th ed.) Citation

American Telephone and Telegraph Company. For Noteworthy Public Service. [publisher not identified], 1950.