This page, most often titled Bibliography, is usually placed at the end of the work preceding the index. In the NB system, the bibliography provides an alphabetical list of all sources used in a given work. The footnote or endnote itself begins with the appropriate number followed by a period and then a space.

If you cite the same source again, the note need only include the surname of the author, a shortened form of the title (if more than four words), and page number(s). The first note for each source should include all relevant information about the source: author’s full name, source title, and facts of publication. In either case, a superscript number corresponding to a note with the bibliographic information for that source should be placed in the text following the end of the sentence or clause in which the source is referenced. Footnotes will be added at the end of the page on which the source is referenced, and endnotes will be compiled at the end of each chapter or at the end of the entire document. In the NB system, you should include a note (endnote or footnote) each time you use a source, whether through a direct quote or through a paraphrase or summary. The NB system is most commonly used in the discipline of history. It also offers writers an outlet for commenting on those cited sources. The Chicago NB (Notes & Bibliography) system is often used in the humanities and provides writers with a system for referencing their sources through footnote or endnote citation in their writing and through bibliography pages.

Chicago style footnotes