Cita APA (7a ed.)

Harder, P. O. (1986). Basic materials in music theory: A programed course. Allyn and Bacon.

Cita Chicago Style (17a ed.)

Harder, Paul O. Basic Materials in Music Theory: A Programed Course. Boston: Allyn and Bacon, 1986.

Cita MLA (9a ed.)

Harder, Paul O. Basic Materials in Music Theory: A Programed Course. Allyn and Bacon, 1986.