Cita APA (7th ed.)

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.

Cita Chicago (17th ed.)

Mills, Gordon, Les Reed, i Anita Kerr. It's Not Unusual: For Mixed Chorus (SATB) with Piano and Optional Percussion and String Bass. London: Leeds Music Limited, 1969.

Cita MLA (9th ed.)

Mills, Gordon, et al. It's Not Unusual: For Mixed Chorus (SATB) with Piano and Optional Percussion and String Bass. Leeds Music Limited, 1969.