Forrás: Rudiments of Music. Cora B. Ahrens. Composed by Cora B. Ahrens. Voice sheet music. Choir sheet music. Rudiments of Music.
Fordítás: Alapismeretek Music. Komponálta Cora B. Ahrens. Voice kotta. Kórus kotta. Alapismeretek Music. 1. könyv. A Choral, Voice. Vol 1.