M.A. · Martha A. · Martha Ashleigh Keith Snell
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| GP660 - Fundamentals of Piano Theory - Preparatory Level | 978-0-8497-6253-6 | 1998 | Keith Snell |
| GP661 - Fundamentals of Piano Theory - Level 1 | 978-0-8497-6254-3 | 1998 | " |
| GP663 - Fundamentals of Piano Theory - Level 3 | 978-0-8497-6258-1 | 2008 | " |
| GP665 - Fundamentals of Piano Theory - Level 5 | 978-0-8497-6264-2 | 2016 | " |