Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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