A manual for writers of research papers, theses, and dissertations, 7th edition - Kate L. Turabian 2007

Special types of newspaper citations
Notes-bibliography style: citing specific types of sources
Part II. Source Citation

In addition to individual, signed articles, newspapers include many other types of pieces, some of which require special treatment in citations.

Regular columns. Many regular columns carry headlines as well as column titles. You may use either both or, to save space, the column title alone (in roman type, not enclosed in quotation marks).

N: 5. Gretchen Morgenson, “Applying a Discount to Good Earnings News,” Market Watch, New York Times, April 23, 2000.

or

5. Gretchen Morgenson, Market Watch, New York Times, April 23, 2000.

Letters to the editor. Cite published letters to the editor generically, without headlines.

N: 6. Virginia J. Davis, letter to the editor, Chicago Tribune, July 29, 2005.

Articles in supplements. Treat articles from Sunday “magazine” supplements or other special sections as you would magazine articles (see 17.3).

Articles published online. For online newspapers, follow the guidelines for articles in print newspapers. In addition, include the URL and the date you accessed the material (see 15.4.1). Note that a URL alone is not sufficient; you must provide the full facts of publication, as far as they can be determined, so that a reader can search for the source even if the URL changes. You may identify the location of a cited passage in a note by adding a descriptive locator (such as a preceding subheading) following the word under.

N: 12. Dave Hoekstra, “Restoring a Legacy,” Chicago Sun-Times, December 19, 2005, under “Home Away from Home,” http://www.suntimes.com/output/hurricane/cst-ftr-nola19.html (accessed December 19, 2005).