Reference books like dictionaries and encyclopedias are great ways to get background information on your topic.
You will need to cite information you learn from reference works, just as you would from books and articles. Citation information is usually at the bottom of the screen if you are using an online reference source.
The Greenwood encyclopedia of women's issues worldwide
Women in world history : a biographical encyclopedia
Gay and Lesbian Literature
Completely Queer: the Gay and Lesbian Encyclopedia
Gay and Lesbian Americans and Political Participation : a Reference Handbook
Encyclopedia of women and gender : sex similarities and differences and the impact of society on gender