Cita APA (7a ed.)
Scott D. Harrison & Jessica O’Bryan. Teaching Singing in the 21st Century. Springer.
Cita estilo Chicago (17a ed.)
Scott D. Harrison y Jessica O’Bryan. Teaching Singing in the 21st Century. Dordrecht, Holanda: Springer.
Cita MLA (9a ed.)
Scott D. Harrison y Jessica O’Bryan. Teaching Singing in the 21st Century. Springer.
Precaución: Estas citas no son 100% exactas.