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.
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The SAGE Dictionary of Sociology by 
The SAGE Encyclopedia of Social Science Research Methods by 
World of Sociology by Information sources in the social sciences
POR Reference H61 .I56 2002
