Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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