Remember: To limit your search results to books, before your search select Books as the material type for the search will retrieve, or after your search, limit the results to Books.
What's the simplest way to find political science-related books? Use Library Search -- the search tool on the Libraries' home page.
Another way to search for print books (as opposed to e-books) is to browse the shelves. WMU Libraries use the Library of Congress (LC) classification system to organize its books, and within this system, political science books generally have a call number that starts with a "J". Since print materials are shelved in call number order, all the "Js" will be found together, which means generally political science books are shelved together
But, because of the LC system's peculiarities, many political science-related books have a call number that does not start with "J", and will be shelved far away from other political science books.
Take away message: Browsing is a great way to find books, but if you want to do a thorough search for books on a specific topic, use Library Search.
Curious how the Library of Congress Classification System organizes topics? Take a look at the Library of Congress Classification Outline.
Use this article database to search for book reviews.