Reference resources are a great way to get started with your research. They provide an overview of a topic, such as definitions, key issues and fast facts. They can help you focus your argument and find lists of further readings written by experts in the field. Use the indexes and tables of contents to understand what you will find in each and go from there. They can be especially useful to help you develop an outline for your topic, or understand the best keywords to use as you go deeper into the research.
Here are just a few suggestions of good reference resources:
A few examples of potential useful chapters or entries:
Special Education. (2004). In Encyclopedia of Applied Psychology. Oxford: Elsevier Science & Technology.
Young Children's Understanding of Disabilities: Implications for Attitude Development and Inclusive Education. (2012). In Handbook of Research on the Education of Young Children. London: Routledge.
Learning Disabilities. (2014). In Encyclopedia of Special Education: A Reference for the Education of the Handicapped and Other Exceptional Children and Adults. Hoboken, NJ: Wiley.