Παραπομπή σε μορφή APA (7η εκδ.)

(1917). The Original Guckert's chords for the ukulele at sight: Without notes or teacher. Union Music.

Παραπομπή σε μορφή Chicago (17η εκδ.)

The Original Guckert's Chords for the Ukulele at Sight: Without Notes or Teacher. Toledo: Union Music, 1917.

Παραπομπή σε μορφή MLA (9th εκδ.)

The Original Guckert's Chords for the Ukulele at Sight: Without Notes or Teacher. Union Music, 1917.