APA (7th ed.) Zitazioa

Ingram, M. D. (1962). Vocal technique for children and youth. Abingdon.

Chicago Style (17th ed.) Zitazioa

Ingram, Madeline D. Vocal Technique for Children and Youth. New York: Abingdon, 1962.

MLA (9th ed.) Zitazioa

Ingram, Madeline D. Vocal Technique for Children and Youth. Abingdon, 1962.