III. Alternative and preferred way to cite signed articles
(following Turabian 8.112).
 

Grout, Donald J. "Opera." In The Harvard Dictionary of Music.  2nd edEd. by
         Willi Apel.
  Cambridge: Belknap Press of Harvard University Press, 1969.

Greenspan, Charlotte. "Opera." In The New Harvard Dictionary of Music.  Ed. by
         Don Michael Randel.
  Cambridge: Belknap Press of Harvard University Press, 1986.

Jander, Owen.  "Virtuoso."  In The New Grove Dictionary of Music and Musicians. Ed.
         by Stanley Sadie.
  Washington, D.C.: Grove's Dictionaries of Music, 1980.