Ottman, R. W. (1983). Elementary harmony: Theory and practice (3rd ed.). Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Ottman, Robert W. Elementary Harmony: Theory and Practice. 3rd ed. Englewood Cliffs, N. J: Prentice-Hall, 1983.
Lua MLA (9ú heag.)Ottman, Robert W. Elementary Harmony: Theory and Practice. 3rd ed. Prentice-Hall, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.