Ethnomusicology

This slim volume by esteemed musicologist D. Kern Holoman is the guide the Chicago Manual of Style defers to for the peculiarities of music citation. However, don't overlook Chapter 1, which will answer all your technical questions about how to incorporate music terminology (e.g., key signatures, pitches, keys, and titles of works) into your papers.

Produced by the staff of music's most academic and global scholarship database, RILM, this manual distinguishes itself by offering guidelines for discussing non-Western music traditions into English-language papers.

This massive tome is written for authors writing in all disciplines; therefore, its discussion of music documents is slight. Other resources, such as the Indiana University guide linked above, handle discipline-specific questions in much more depth. Nonetheless, there is sometimes value in diving into the original source. In particular, chapter 14 addresses the preferred Notes and Bibliography citation style.