The books listed below are reference books and are a good place to start your research. They will provide overviews of the topic, allowing you to build a basic understanding of the topic.
Ref 616.89 MEN
Bellenir, Karen. Mental Health Disorders Sourcebook: Basic Consumer Health Information about Mental and Emotional Health and Mental Illness, including Facts about Depression, Bipolar Disorder, and Other Mood Disorders ... Detroit, MI: Omnigraphics, 2005. Print.
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Contains basic information for the layperson about mental health disorders, providing medical explanations of schizophrenia, depression, anxiety, and other afflictions, and offers advice on treatment options.
REF 150 PSY V.1
Psychology. Danbury, CT: Grolier Educational, 2002. Print.
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Contains articles that examine various aspects of psychology, covering the historical development of the field, the brain and the mind, thinking and knowing, and developmental, social, and abnormal psychology; and includes summaries of key points, definitions of terms, case studies, and biographies.
REF 150 ENC
Adams, Nina. Psychology Encyclopedia. Guilford, CT: Dushkin Pub. Group, 1973. Print.
REF 920 NOR
Nordby, Vernon J., and Calvin S. Hall. A Guide to Psychologists and Their Concepts. San Francisco: W.H. Freeman; Trade Distributor: Scribner, New York, 1974. Print.
EBook
Strickland, Bonnie, ed. The Gale Encyclopedia of Psychology. 2nd ed. Detroit: Gale, 2001. Gale Virtual Reference Library. Web. 10 Dec. 2015.