Oxford Music Online, formerly known as Grove, calls itself a dictionary, but functions like an encyclopedia, yet features signed articles by experts in their fields. The citation format provided here is a hybrid of the journal article style and the signed article encyclopedia style
Deane Root is the editor for Grove Online.
F:
1. Edward Strickland, "Glass, Philip," Grove Music Online, ed. Deane Root, accessed June 30, 2016, http://www.oxfordmusiconline.com.
B:
Strickland, Edward. "Glass, Philip." Grove Music Online. Edited by Deane Root. Accessed June 30, 2016. http://www.oxfordmusiconline.com.
Print
F:
1. Edward Strickland, "Glass, Philip," The New Grove Dictionary of Music and Musicians, eds. Stanley Sadie and John Tyrrell (London: Macmillan, 2001), ix: 934.
B:
Strickland, Edward. "Glass, Philip." The New Grove Dictionary of Music and Musicians. Edited by Stanley Sadie and John Tyrrell. London: Macmillan, 2001. ix: 932-936.
At the end of the citation, list the volume in Roman numerals and the page numbers in Arabic numerals.