Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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