Kraft, L. (1976). Gradus - Book II An integrated approach to harmony, counterpoint, and analysis. W. W. Norton & Company Inc.
Čikaški stil citiranja (17. izdanje)Kraft, Leo. Gradus - Book II An Integrated Approach to Harmony, Counterpoint, and Analysis. W. W. Norton & Company Inc, 1976.
MLA način citiranja (8. izdanje)Kraft, Leo. Gradus - Book II An Integrated Approach to Harmony, Counterpoint, and Analysis. W. W. Norton & Company Inc, 1976.
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