Ukulele Tutorial - Strumming Down And Up - YouTube
Sing & Strum Ukulele: For the elementary music classroom - SingtoKids
Amazon.fr - Pop Standards - Strum Together: 70 Songs with Lyrics, Melody Lines, and Chord Frames for Standard Ukulele, Baritone Ukulele, Guitar, Mandolin and Banjo - Hal Leonard Corp, Phillips, Mark - Livres