Cita APA (7a ed.)

Hansen, P. S. (1967). An introduction to twentieth century music (2d ed.). Allyn and Bacon.

Cita Chicago Style (17a ed.)

Hansen, Peter S. An Introduction to Twentieth Century Music. 2d ed. Boston: Allyn and Bacon, 1967.

Cita MLA (8a ed.)

Hansen, Peter S. An Introduction to Twentieth Century Music. 2d ed. Allyn and Bacon, 1967.