Prevod: Ena Voice. Voice note. Ena Voice Billy Gilman. Zbor note. David Malloy in Don Cook. Uredil Roger Emerson.
Prevod: Ena Voice. Voice note. Ena Voice Billy Gilman. Easy Piano note. Za enostavno klavir. Država. HX.1615.
Prevod: One Voice Sheet Music Billy Gilman. One voice, one simple word. David Malloy, Don Cook.
Prevod: One Voice Sheet Music Billy Gilman. David Malloy, Don Cook. Alfred Publishing Co.. Angleščina. 0-7579-8282-4.
Prevod: Ena Voice Billy Gilman. Ena Voice. Billy Gilman - One Voice. - Digital Sheet Music.