Therapist Assistant

Background sources, also known as reference sources, include encyclopedias, dictionaries, handbooks, directories, and other online or print "books". You might want to consult one or more of them when you're first starting your research, especially if the topic you are researching is unfamiliar to you. They can be excellent sources of factual information, concepts, theories, definitions, terminology and references to other, more in-depth, sources of information.