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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.
Online reference resources
Lesbian Histories and Cultures: An EncyclopediaBeginning in 1869, when the study of homosexuality can be said to have begun with the establishment of sexology, this Encyclopedia offers accounts of the most important international developments in an area that now occupies a critical place in many fields of academic endeavours. While gays and lesbians have shared many aspects of life, their histories and cultures developed in profoundly different ways.