Johnson, D. J. (1997). Choral techniques: Beyond the basics : practical suggestions for choral conductors of school groups and community and church choirs. Neil A. Kjos Music.
Chicago-viite (17. p.)Johnson, Deral J. Choral Techniques: Beyond the Basics : Practical Suggestions for Choral Conductors of School Groups and Community and Church Choirs. San Diego, Calif: Neil A. Kjos Music, 1997.
MLA-viite (9. p.)Johnson, Deral J. Choral Techniques: Beyond the Basics : Practical Suggestions for Choral Conductors of School Groups and Community and Church Choirs. Neil A. Kjos Music, 1997.
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