APA (7th ed.) Zitazioa
Gest, E. (1931). Keyboard harmony for juniors: For individual work, class or club meetings. Oliver Ditson company, inc..
Chicago Style (17th ed.) Zitazioa
Gest, Elizabeth. Keyboard Harmony for Juniors: For Individual Work, Class or Club Meetings. Boston: Oliver Ditson company, inc., 1931.
MLA (9th ed.) Zitazioa
Gest, Elizabeth. Keyboard Harmony for Juniors: For Individual Work, Class or Club Meetings. Oliver Ditson company, inc., 1931.
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