In general, published scores should be cited much in the same way as books (CMOS 14.155).
LastName, FirstName. Title. Publisher, Year.
Shaw, Caroline. Valencia. Caroline Shaw Editions, 2015.
#. FirstName LastName, Title (Publisher, Year), PageNumber.
1. Caroline Shaw, Valencia (Caroline Shaw Editions, 2015).
(LastName Year, PageNumber)
(Shaw 2015, 2)
LastName, FirstName. Title. Publisher, Year. Database.
Nørager, Niels. 2 Sange. Wilhelm Hansen, 2002. Music Online: Classical Scores Database.
#. FirstName LastName, Title (Publisher, Year), PageNumber, Database.
1. Niels Nørager, 2 Sange (Wilhelm Hansen, 2002), 2, Music Online: Classical Scores Database.
(LastName Year, PageNumber)
(Nørager 2002)
Scores from collected works (like those found in the M2 and M3 section of the Conservatory Library) should be cited as if they were a book in a series (CMOS 14.25). The series editor is typically omitted, but if you are citing prefatory material found within a collected work, you should include it after the series title.
LastName, FirstName. Title. Edited by FirstName LastName. NameofSeries, vol. #. Publisher, Year.
Schubert, Franz. Der Spiegelritte. Edited by Felix Loy. Neue Ausgabe sämtlicher Werke, series 2, vol. 4. Bärenreiter-Verlag, 2023.
#. FirstName LastName, Title, ed. FirstName LastName, NameofSeries, vol.# (Publisher, Year), PageNumber.
1. Franz Schubert, Der Spiegelritte, ed. Felix Loy, Neue Ausgabe sämtlicher Werke, series 2, vol. 4 (Bärenreiter-Verlag, 2023), vii.
(LastName Year, PageNumber)
(Schubert 2023, vii)