The King's Singers (Vocal group). (1997). Spirit voices: The King's Singers. RCA Victor.
Cita Chicago (17th ed.)The King's Singers (Vocal group). Spirit Voices: The King's Singers. [S.l.]: RCA Victor, 1997.
Cita MLA (9th ed.)The King's Singers (Vocal group). Spirit Voices: The King's Singers. RCA Victor, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.