Flesch, C. (1926). Scale system: Scale exercises in all major and minor keys for daily study. Carl Fischer.
Chicago-referens (17:e uppl.)Flesch, Carl. Scale System: Scale Exercises in All Major and Minor Keys for Daily Study. Nueva York: Carl Fischer, 1926.
MLA-referens (9:e uppl.)Flesch, Carl. Scale System: Scale Exercises in All Major and Minor Keys for Daily Study. Carl Fischer, 1926.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.