Books are one place you will find secondary and primary research works. A relevant book source should help you in one of the following ways:
Another way to search for books is by subject headings (see instructions for using Browse Search in the Subject Encyclopedia box above). The Library of Congress examines books when published and assigns subject headings to a book based on the topic(s) of the book. A subject heading is a specific heading or "tag" that is assigned to all books dealing with the topic. That way when you search using it, you will find all books that have been classified in the same way. Here is an explanation of the difference between keywords and subjects.
Subject headings are also useful when you have found one useful book using keywords and you wish to find others just like it. Check the subject headings for the book you have found (they are listed under the Item Details tab on the book's record). By clicking on the subject heading, you will get results that have been classified in the same way.
If your book is an e-book, it will often show Subject Headings exactly as the one above. However, if it doesn't, then you will need to click on the link to access the e-book and then look for the subject heading on the download page.
Evaluating Books with PAARC
To evaluate books, you can use the same PAARC criteria as before. In addition, you can
Possible places to find book reviews:
As you move deeper into your research and your data collecting, consider keeping one or more of the following types of lists for your topic.
Taken from The Elements of library research: What every student needs to know.