Gaya APA
Feierabend, J, M. et al (2003).
Book of Pitch Exploration, The : Can your voice do this? .
Chicago, USA:
GIA Publications, Inc..
Gaya MLA
Feierabend, John, M.. et al.
"Book of Pitch Exploration, The : Can your voice do this?".
Chicago, USA:
GIA Publications, Inc.,
2003.
Academic.