IV. Score in a series:  Use Turabian 11.16, "Book in a Series."
(Note: DO NOT underline or italicize the series title)
 

c. Including editor:

Haydn, Michael.  Streichquartette Nr. 5 in F-Dur.  Hrsg. von Helmut Zehetmair.
        Diletto Musicale, Nr. 335.  Vienna: Doblinger, 1972.  Parts.