The Chicago Manual of Style, published by the University of Chicago, is frequently followed by book publishers, journals, and some academic fields. It calls for sources to be cited in notes, either footnotes at the bottom of pages endnotes at the end of chapters, articles, or books. The rules for citing sources are precise, and described in detail in The Chicago Manual of Style, located in the Writing Center and in the library, and in the following websites:

http://www.chicagomanualofstyle.org

http://www.wisc.edu/writing/Handbook/DocChicago.html