Originalus: Deborah A. Sheldon and Robert Sheldon. Lessons in Performance Book 1, Around the World - Baritone Saxophone. Sheet Music.
Vertimas: Deborah A. Sheldon ir Robertas Sheldon. Pamokos Performance knygos 1, viso pasaulio - baritonas saksofonas. Nata. Baritonas saksofonas.