APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Flesch, Carl. Scale System: Scale Exercises in All Major and Minor Keys for Daily Study. New York: Carl Fischer, Inc, 1942.

MLA -ийн эшлэл (9 дэх хэвлэлт)

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