ماخذ: Pool, Henry. "Nations United", a Peace Song for Choir & Piano. Score & Parts. Opus 32. Pool, Henry. Choral and Piano.
ترجمه: استخر، هنری. Opus 32, "Nations United", a Peace Song for Choir & Piano. نمره. اپوس 32. استخر، هنری. کرال و پیانو. نمره.