Citation & style guides
Find guidance for formatting footnotes and bibliographical entries, as well as information on punctuation, abbreviations, incorporating tables and captions, and more:
Chicago Manual of Style, 15th edition
See under "Documentation" in the table of contents.
This book is also available in print: Music Reference Z253 .U69 2003
Columbia Guide to Online Style, 2nd Edition
How to Cite Electronic Sources, from the Library of Congress.
Citing Electronic Resources Using MLA Style, from Indiana University Libraries.
How to Cite Film, Video, and Online Media from UC Berkeley Libraries
Citing Music Sources from the University of Western Ontario Music Library. This pdf is rich in examples of footnotes and bibliographic entries, including citations for printed scores, sound recordings, and web-based information.