Stehman, J. W. (1967). The financial history of the American telephone and telegraph company. Kelley.
Cita Chicago Style (17a ed.)Stehman, Jonas Warren. The Financial History of the American Telephone and Telegraph Company. New York: Kelley, 1967.
Cita MLA (9a ed.)Stehman, Jonas Warren. The Financial History of the American Telephone and Telegraph Company. Kelley, 1967.
Precaución: Estas citas no son 100% exactas.