APA
Netrebko A., Verdi G., Bellini V., Donizetti G. & Abbado C. (2013). Sempre libera. [Europe]: Universal music.
Chicago
Netrebko Anna, Verdi Giuseppe, Bellini Vincenzo, Donizetti Gaetano and Abbado Claudio. 2013. Sempre libera. [Europe]: Universal music.
Harvard
Netrebko A., Verdi G., Bellini V., Donizetti G. and Abbado C. (2013). Sempre libera. [Europe]: Universal music.
MLA
Netrebko Anna, Verdi Giuseppe, Bellini Vincenzo, Donizetti Gaetano and Abbado Claudio. Sempre libera. [Europe]: Universal music. 2013.
