Original tekst: Methods & Treatises Voice - 7 Volumes - France 1800-1860. Romagnesi Henri. Voice sheet music. Serie II - France 1800-1860. For Voice.
Oversættelse: Metoder. Louis LABLACHE - Antoine Joseph Michel, DIT Henri ROMAGNESI. Bind 6. Voice noder. Metoder. Denne udgave. Facsimile.