The Chicago manual of style : [the essential guide for writers, editors, and publishers]. - 15th ed.. - Chicago [a. o.] : University of Chicago Press, 2003. - XVII, 956 p.: ill.. URL: http://www.chicagomanualofstyle.org. URL: http://www.loc.gov/catdir/description/uchi051/2003001860.html. URL: http://www.loc.gov/catdir/bios/uchi051/2003001860.html. URL: http://www.loc.gov/catdir/toc/uchi051/2003001860.html