APA (7th ed.) Citation

Flesch, C. (1942). Scale-system: Scale exercises in all major and minor keys for daily study. Carl Fischer.

Chicago Style (17th ed.) Citation

Flesch, Carl. Scale-system: Scale Exercises in All Major and Minor Keys for Daily Study. Nueva York: Carl Fischer, 1942.

MLA (9th ed.) Citation

Flesch, Carl. Scale-system: Scale Exercises in All Major and Minor Keys for Daily Study. Carl Fischer, 1942.