IV. Score in a series:  Use the same style as a "Book in a Series."
(Note: DO NOT underline or italicize the series title)

e. With a parallel title:

Gassman, Florian Leopold.  Zwei Streichtrios / Two String Trios.  Edited by Wolfgang Sawodny.  Hortus Musicus, 247.  Kassel: Bärenreiter, 1988.  Parts.

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