Books are a great resource for your assignments and research! Why?
But they're so... LONG! No one has time to read a whole book for just one source in a paper!
Don't worry, you don't have to read the entire book in order to cite it in your paper! Skim the book's contents for information relevant to your research by looking at the table of contents or chapter titles. If you are using the library's eBooks, you can also search within the book to find where your keywords appear in the text to find the most relevant sections.