Black Book - Telephone Industry (October 1976). Bernstein Institutional Services LLC.
Cita Chicago (17th ed.)Black Book - Telephone Industry (October 1976). Bernstein Institutional Services LLC.
Cita MLA (8th ed.)Black Book - Telephone Industry (October 1976). Bernstein Institutional Services LLC.
Atenció: Aquestes cites poden no estar 100% correctes.
