एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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