Flesch, C. (1942). Scale system: Scale exercises in all major and minor Keys for daily study. Carl Fischer, Inc.
Chicago-viite (17. p.)Flesch, Carl. Scale System: Scale Exercises in All Major and Minor Keys for Daily Study. New York: Carl Fischer, Inc, 1942.
MLA-viite (9. p.)Flesch, Carl. Scale System: Scale Exercises in All Major and Minor Keys for Daily Study. Carl Fischer, Inc, 1942.
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