Reference sources provide a broad or general introduction to a topic, and often provide links or "pointers" (e.g., bibliographies, references, authors) to other information sources. They are a great place to begin exploring your research topic, and may help you convert a very broad topic into a more focused, more specific research question. You can use reference sources to learn more about:
Very Short Introductions offer concise and original introductions to a wide range of subjects. Our expert authors combine facts, analysis, new insights, and enthusiasm to make often challenging topics highly readable to develop your core knowledge.