the sourced text is indicated by a superscripted note number that corresponds to a full citation either at the bottom of the page (as a footnote) or at the end of a main body of text (as an endnote). In both instances, the citation is also placed in a bibliography entry at the end of the material, listed in alphabetical order of the author's last name. The two formats differ: notes use commas where bibliography entries use periods. The following is an example of a journal article citation provided as a note and its bibliography entry. The third example of the bibliography entry is marked up with color to identify its parts. 1. James M. Heilman and Andrew G. West, "Wikipedia and Medicine: Quantifying Readership, Editors, and the Significance of Natural Language," Journal of Medical Internet Research 17, no. 3 (2015): e62, doi:10.2196/jmir.4069. Heilman, James M., and Andrew G. West. "Wikipedia and Medicine: Quantifying Readership, Editors, and the Significance of Natural Language." Journal of Medical Internet Research 17, no. 3 (2015): e62. doi:10.2196/jmir.4069. Heilman, James M., and Andrew G. West "Wikipedia and Medicine: Quantifying Readership, Editors, and the Significance of Natural Language." Journal of Medical Internet Research 17 no. 3 (2015) e62 doi:10.2196/jmir.4069 Author(s) first listed author's name inverted in the bibliography entry Article title inside quotation marks Journal title in italic type Volume Issue Year along with month, if specified Page numbers specific page number in a note; page range in a bibliography entry Digital object identifier History What now is known as The Chicago Manual of Style was first published in 1906 under the title Manual of Style: Being a compilation of the typographical rules in force at the University of Chicago Press, to which are appended specimens of type in use. From its first 203-page edition, the CMOS evolved into a comprehensive reference style guide of 1,146 pages in its 17th edition. It was one of the first editorial style guides published in the United States, and it is largely responsible for research methodology standardization, notably citation style. The most significant revision to the manual was made for the 12th edition, published in 1969. Its first printing of 20,000 copies sold out before it was printed. In 1982, with the publication of the 13th edition, it was officially retitled The Chicago Manual of Style, adopting the informal name already in widespread use. More recently, the publishers have