Hi there! My EE is about Robin Hood ("To what extent was Robin Hood real?"), and while I didn't have trouble finding sources, they were all too expensive and I only bought 3. My library had NO books about him, so I had to order mine online. They're great, very detailed, with insight, facts, timelines and whatnot. One of them even has a poem from the 1400s, the first written account of Robin. Besides the 3 books, I have about 5 reliable websites I'm drawing information from. My question is, how many book sources and internet sources do we usually need? I emailed my supervisor, but he didn't answer my question, only said I was "on the right track". Thank you!