Columbia Broadcasting System, Inc. CBS Television. (1956). At year's end 1956. [s.n.].
Cita Chicago (17th ed.)Columbia Broadcasting System, Inc. CBS Television. At Year's End 1956. [New York]: [s.n.], 1956.
Cita MLA (9th ed.)Columbia Broadcasting System, Inc. CBS Television. At Year's End 1956. [s.n.], 1956.
Atenció: Aquestes cites poden no estar 100% correctes.