Titon, Jeff Todd (2009). Worlds of Music: An Introduction to the Music of the World's Peoples. Cooley, Timothy J. (5thed.). Belmont, CA: Schirmer Cengage Learning. ISBN978-0534595395. OCLC214315557.
Spring, Glenn (1995). Musical Form and Analysis: Time, Pattern, Proportion. Hutcheson, Jere. Long Grove, Illinois: Waveland Press. p.[pageneeded]. ISBN978-1478607229. OCLC882602291.
Wright, Craig M. (2014). Listening to music (7thed.). Boston, MA: Schirmer/Cengage Learning. p.44. ISBN9781133954729. OCLC800033147.