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Benward & Saker (2003). Music: In Theory and Practice, Vol. I. Seventh Edition. ISBN 978-0-07-294262-0.

Copland, Aaron.  What to Listen for in Music. Published by Signet Classic, an imprint of New American Library, a division of Penguin Group (USA) Inc., 375 Hudson Street, New York, NY.

Hanning, Barbara Russano, Concise History of Western Music, based on Donald Jay Grout & Claudia V. Palisca's A History of Western Music, Fifth Edition. Published by W. W. Norton & Company, New York, Copyright 1998. ISBN 0-393-97168-6.

Kliewer, Vernon (1975). "Melody: Linear Aspects of Twentieth-Century Music", Aspects of Twentieth-Century Music, p. 270-301. Wittlich, Gary (ed.). Englewood Cliffs, New Jersey: Prentice-Hall. ISBN 0-13-049346-5.