V. Composer in collected works:  Use Turabian 11.13
 "Author's Works Contained in Collected Works."
 

b. Volume in a sub-series:

Verdi, Giuseppe.  The Works of Giuseppe Verdi.  Series I: Operas.  Vol. 17:  Rigoletto:
        Melodrama in Three Acts by Francesco Maria Piave. Edited by Martin Chusid.
        Chicago: University of Chicago Press, 1983.  Score.