Books are long-form writings that can provide important information for researchers. To find books in the library's search interface, you can filter your search query to only include books (shown below -- filters on the far left, under RESOURCE TYPE).
Books and journal articles are the most common way to access scholarly research in your field, but each has advantages and disadvantages. Books take longer to research, write, and publish, so the information is not as current as in journal articles, which are shorter and slightly faster to publish. However, because they are longer and took more time to produce, books offer more thorough coverage of a topic, draw on a wider range of preexisting scholarship, and often excel in placing an argument in broader thematic and disciplinary context.
Consider a scholarly book in your own research, and look for the following: