MLA Citation Style 9th Edition: Location

• The location used depends on the medium of the source.
• For print sources, the location is the page number or range of page numbers.
  • The format is "p. 166" for one page and "pp. 123-166" for a range of pages. For articles that do not have consecutive pages, use only the first page number and a plus sign: p. 166+
• For online sources, the location is the  DOI (if available), permalink (if available) or URL. Please read https://style.mla.org/2016/11/02/urls-some-practical-advice/ for guideline on how to shorten the URL when it is more than three full lines long, or refer to MLA Handbook 5.96.
  • Omit the URL protocol (http:// or https://) unless you want to provide live link for your online text.
• For a DVD, use the disc number.
• For physical objects like artwork or live events, use the place where the work was heard or viewed.
• Optional elements include: 
  • the original date of publication, if it is relevant to the use of the source. Place the original date of publication after the source's title followed by a period.
  • original city of publication for sources published prior to 1900, or books with different versions depending upon the audience, like a book available in a British or American version. Place the city name before the publication date followed by a comma.
• This element ends with a period.

Book:

Brinkley, Alan. The Unfinished Nation: A Concise History of the American People. 7th ed. McGraw Hill. 2014, p. 525.