APA (7th ed.) Citation

Harder, P. O., & Steinke, G. A. (1991). Basic materials in music theory: A programed course (7th ed.). Allyn and Bacon.

Chicago Style (17th ed.) Citation

Harder, Paul O., and Greg A. Steinke. Basic Materials in Music Theory: A Programed Course. 7th ed. Boston: Allyn and Bacon, 1991.

MLA (9th ed.) Citation

Harder, Paul O., and Greg A. Steinke. Basic Materials in Music Theory: A Programed Course. 7th ed. Allyn and Bacon, 1991.