Mills, G., Reed, L., & Kerr, A. (1969). It's not unusual: For mixed chorus (SATB) with piano and optional percussion and string bass. Leeds Music Limited.
Chicago-viite (17. p.)Mills, Gordon, Les Reed, ja Anita Kerr. It's Not Unusual: For Mixed Chorus (SATB) with Piano and Optional Percussion and String Bass. London: Leeds Music Limited, 1969.
MLA-viite (9. p.)Mills, Gordon, et al. It's Not Unusual: For Mixed Chorus (SATB) with Piano and Optional Percussion and String Bass. Leeds Music Limited, 1969.
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