Originalus: Bastien Piano Basics, Level 4, Theory. Published by Neil A. Kjos Music Company. James Bastien. Piano Method sheet music. For piano.
Vertimas: Bastien Piano pagrindai, 4 lygis, teorija. Paskelbta Neil A. Kjos muzikos kompanija. Pianinas metodas natos. Tarpinis. Fortepijonui.