IV. Score in a series:  Use the same style as a "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.

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