Cita APA (7a ed.)
Black Book - AT&T (American Telephone & Telegraph Company): 1979. Bernstein Institutional Services LLC.
Cita Chicago Style (17a ed.)
Black Book - AT&T (American Telephone & Telegraph Company): 1979. Bernstein Institutional Services LLC.
Cita MLA (9a ed.)
Black Book - AT&T (American Telephone & Telegraph Company): 1979. Bernstein Institutional Services LLC.
警告：這些引文格式不一定是100％准確.