Reference sources are invaluable for defining key concepts, providing brief overviews of a subject, and identifying major theories and research developments. They can provide you with the background you need to select and develop a topic of research, or help you explore internship or career opportunities.
Reference sources are useful tools to obtain background information and to develop a vocabulary of possible search terms. The following items are resources available within the University of Southern Maine system.
APA Dictionary of Psychology, 2nd Ed. by 
Campbell's Psychiatric Dictionary, 8th ed by 
The Corsini Encyclopedia of Psychology and Behavioral Science by 
Diagnostic and statistical manual of mental disorders: DSM-5-TR by 
Encyclopedia of Psychology by 
Handbook of Psychology, 2ed (Books) by 
Measures for Clinical Practice and Research by 
50 Great Myths of Human Sexuality by 