(1917). The Original Guckert's chords for the ukulele at sight: Without notes or teacher. Union Music.
Lua i Stíl Chicago (17ú heag.)The Original Guckert's Chords for the Ukulele at Sight: Without Notes or Teacher. Toledo: Union Music, 1917.
Lua MLA (9ú heag.)The Original Guckert's Chords for the Ukulele at Sight: Without Notes or Teacher. Union Music, 1917.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.