Παραπομπή APA

American telephone and telegraph co. (1922). AT & T Bell lab technical journal. American telephone and telegraph co.

Παραπομπή Chicago Style

American telephone and telegraph co. AT & T Bell Lab Technical Journal. New York: American telephone and telegraph co, 1922.

Παραπομπή MLA

American telephone and telegraph co. AT & T Bell Lab Technical Journal. American telephone and telegraph co, 1922.