The King's Singers (Vocal group). (1997). Spirit voices: The King's Singers. RCA Victor.
Chicago-viite (17. p.)The King's Singers (Vocal group). Spirit Voices: The King's Singers. [S.l.]: RCA Victor, 1997.
MLA-viite (9. p.)The King's Singers (Vocal group). Spirit Voices: The King's Singers. RCA Victor, 1997.
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