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.
Common Terminology, Abbreviations and Symbols for Therapeutic Recreation and Other Activity Therapies by 
Dictionary of Concepts in Recreation and Leisure Studies by 
Glossary of Recreation Therapy and Occupational Therapy by 
Encyclopedia of Recreation and Leisure in America by 
The Encyclopedia of Elder Care by