Bartle, Jean Ashworth.Lifeline for Children's Choir Directors. Toronto : G. V. Thompson, 1988. See especially Chapter 3, " The Uncertain Singer," pp. 13-16.
2.
Bartle, Jean Ashworth.Sound Advice: Becoming a Better Children's Choir Conductor. New York: Oxford University Press, 2003. See especially the first two chapters.
3.
Choralnet:The Internet Center for Choral Music. See especially the section called Rehearsal Tips: Beginning Singers. www.choralnet.org.
4.
Feierabend, John M.The Book of Call and Response:You Sing, I'll Sing. Chicago : GIA Publications, 2003 .
5.
Feierabend, John M.The Book of Echo Songs: I'll Sing After You. Chicago : GIA Publications, 2003.
6.
Hearfones.Available from Nextep Technologies , www.hearfones.com.
7.
Levinowitz, Lili M., Pamela Barnes, Susan Guerrini, Margaret Clement, Pasquale D'April, and Mary Jane Morey . "Measuring Singing Voice Development in the Elementary General Music Classroom." Journal of Research in Music Education46, no. I (1998): 35-47.
8.
McRae, Shirley W.Directing the Children's Choir. New York: Schirmer Books, 1991. See especially pp. 146-59.
9.
Rutkowski, Joanne. "The Measurement and Evaluation of Children's Singing Voice Development ." The Quarterly Journal of Music Teaching and Learning1, no. I (1990): 81-95.
10.
Rutkowski, Joanne, and Maria Runfola.TIPS: The Child Voice. Reston,VA: MENC, 1997.
11.
Swears, Linda.Teaching the Elementary School Chorus. West Nyack, NY: Parker Publishing, 1985. See especially pp. 37-47.
12.
Thompson, Keith.Singing in General Music. Video. Reston,VA: MENC, 1994. See especially the section on learning to sing in tune.