Citação norma APA

American Telephone and Telegraph Company & American Telephone and Telegraph Company. Information Dept. Bell Telephone magazine. American Telephone and Telegraph Co., etc.].

Citação norma Chicago

American Telephone and Telegraph Company and American Telephone and Telegraph Company. Information Dept. Bell Telephone Magazine. [New York: American Telephone and Telegraph Co., etc.].

Citação norma MLA

American Telephone and Telegraph Company and American Telephone and Telegraph Company. Information Dept. Bell Telephone Magazine. American Telephone and Telegraph Co., etc.].

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.