Laurier's online encyclopedias are s source of background information on a topic. Each encyclopedia entry provides references for further reading. Encyclopedia of Play: A Social History Encyclopedia of Sociology Sage Reference Online includes a number of individual encyclopedias that pertain to youth studies. Search for a topic across all volumes or within a specific encyclopedia. Sage encyclopedias include: Encyclopedia of Children, Adolescents and the Media Encyclopedia of Human Development Encyclopedia of Play in Today's Society Encyclopedia of Applied Developmental Science Encyclopedia of Educational Psychology Encyclopedia of Consumer Culture Encyclopedia of Juvenile Justice Oxford Reference Online includes: Encyclopedia of Sociology Encyclopedia of Human Rights Encyclopedia of Social Work