US Army Nurse Corps recruiting poster. (Stu Savage, Photographer). Encyclopedia Britannica ImageQuest. Web. 26 Jun 2014. http://quest-preview.eb.com/#/search/115_2741262/cite
Some questions to ask yourself before you start your research:
If you are unfamiliar with your topic, it is a good idea to do a little "pre-research" to gather enough information to ask an intelligent research question. Pay attention to the terminology that writers use to describe your topic. Using the right phrasing in your searches can help you find better resources.
Remember, these sources are to help you learn basic information about your topic. They may not be acceptable to use for sources in your finished research.