Holst, I. (1963). An ABC of music; a short practical guide to the basic essentials of rudiments, harmony, and form. With a forword by Benjamin Britten. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Holst, Imogen. An ABC of Music; a Short Practical Guide to the Basic Essentials of Rudiments, Harmony, and Form. With a Forword by Benjamin Britten. London: Oxford University Press, 1963.
Lua MLA (9ú heag.)Holst, Imogen. An ABC of Music; a Short Practical Guide to the Basic Essentials of Rudiments, Harmony, and Form. With a Forword by Benjamin Britten. Oxford University Press, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.