Q. Is the CQ Researcher a Reference Book, or really just a series of reports, and how should I cite it in MLA Format?
The CQ Researcher is treated as a Reference Book, but it is not typical in the sense that it is not published in multiple editions as many reference books are. In fact, the individual reports on various subjects are updated on a cyclical basis, at varying times. For this reason, it is important to include the volume and year of the latest update to the specific report that you are choosing to cite in your bibliography.
The CQ Researcher is also considered a specialized Reference Book and therefore should show the place of publication, as well as the name of the publisher. Most of your professors, as well as your library instructors, will allow you some latitude in citing the CQ Researcher due to the unique nature of this reference source. I instruct my library research classes to cite it as below, but some variations may be accepted by individual library instructors.
Masci, D. "Civic Renewal." CQ Researcher, Vol. 7, 241-264. Washington: CQ Press, 1997.
CQ Researcher Online. Web. 11 Nov. 2010.