By Eric Taylor. Music Theory in Practice Grade 3 (Revised Edition - 2008). Education. Level: Grade 3. Published by ABRSM (Associated Board of the Royal Schools of Music).
By John W. Schaum. Edited by Gail Lew. Arranged by Revised By Wesley Schaum. Piano method/supplement (Intermediate piano). Level: intermediate, level 4. 32 pages. Published by Belwin
