What were the causes, turning point, and results of the Greco-Persian Wars

I will need 5 sources (2 primary and 3 secondary). The sources will need to come from scholarly sites, etc. I will need to provide a brief paragraph for each source and explain its relevance to the article/essay and how it ties into the thesis. So if at all possible could these paragraphs be included seperate from the completed work? The article/essay must be between 1000-1500 words. The bibliography and article must be cited in the Chicago style.