Use these specialist reference works to help you understand terminology and concepts relating to the subject area. The resources will give you an overview of the topic and also help you familiarise yourself with key words and phrases which you can then use in your literature search.

If you need to look up a word or understand more about a topic but don't know which reference to search then use one of these reference databases which allow you to search across general and subject specific volumes all in one go to find entries on the topics you are interested in.