Izvornik: Two Pieces. Guitar Solo. No. 2. Humoresque Sheet Music by Pyotr Tchaikovsky. Joseph Castle. Pyotr Tchaikovsky. Mel Bay Pub..
Prijevod: Dva komada. Humoreska Sheet Music by Petra Čajkovskog. Broj 2. Josip Castle. Petar Čajkovski. 0-87166-942-0. Solero. Op. 10, br 2.