When starting your research, consulting reference sources like Encyclopedias, Dictionaries, and Handbooks can help create a strong foundation for your paper. These sources can help you better understand the background of your topic and make scholarly articles (which are very detailed) easier to read. Use these sources sparingly - they are meant to provide background and context, not critical analysis. For this reason, reference sources may not count toward the 5 additional sources required by this paper.
The dictionary of human geography (ebook)
The Dictionary of Physical Geography by 
The Canadian Encyclopedia
Immigration and multiculturalism : essential primary sources (ebook)
Government, Politics, and Protest: Essential primary sources
Environmental Issues: Essential Primary Sources by 
Human and civil rights : essential primary sources by 
Social policy : essential primary sources by 
Encyclopedia of Global Warming and Climate Change