APA (7th ed.) Citation

American Telephone and Telegraph Co., New York. (1930). Telephone buildings.: Bell system. American Telephone and Telegraph co..

Chicago Style (17th ed.) Citation

American Telephone and Telegraph Co., New York. Telephone Buildings.: Bell System. New York: American Telephone and Telegraph co., 1930.

MLA (9th ed.) Citation

American Telephone and Telegraph Co., New York. Telephone Buildings.: Bell System. American Telephone and Telegraph co., 1930.