Ingram, M. D. (1959). Organizing and directing children's choirs. Abingdon Press.
Chicago-referens (17:e uppl.)Ingram, Madeline D. Organizing and Directing Children's Choirs. New York: Abingdon Press, 1959.
MLA-referens (9:e uppl.)Ingram, Madeline D. Organizing and Directing Children's Choirs. Abingdon Press, 1959.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.