Why Begin with Reference Books?
Reference books provide factual and background information about a topic.
Many reference books are available online.
Use reference books to explore your topic before you begin searching for journal articles. You’ll have a better feel for appropriate search terms, recent developments, and key thinkers.
Encyclopedia of Sex and Gender: Men and Women in the World's Cultures by
Handbook of Aging and the Social Sciences by 
Encyclopedia of World Trade From Ancient Times to the Present by 
Encyclopedia of Social and Cultural Anthropology by 
Reader's Guide to the Social Sciences by 
