Here are several helpful academic papers and studies regarding Hip Hop, focusing on its history, evolution, and social impact.
Studies often focus on how the culture acts as a tool for protest and a way to address issues of race, class, and gender. Download Hip Hop
Research emphasizes the five pillars: MCing (oral), DJing (aural), Breakdancing (physical), Graffiti (visual), and Knowledge (mental). Here are several helpful academic papers and studies