Allen, M., Malde, M., & Zeller, K. A. (2009). What every singer needs to know about the body. Plural Pub..
Chicago-referens (17:e uppl.)Allen, MaryJean, Melissa Malde, och Kurt Alexander Zeller. What Every Singer Needs to Know About the Body. San Diego, CA: Plural Pub., 2009.
MLA-referens (9:e uppl.)Allen, MaryJean, et al. What Every Singer Needs to Know About the Body. Plural Pub., 2009.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.