Research cited must be scholarly, credible, recent, and relevant. What is a scholarly source? What is a ″good″ source? For details, see: http://blinn.libanswers.com/faq/67422 In short: scholarly, academic, and scientific journals are preferred over popular magazines, news (NY Times), and general interest magazines (National Geographic). I also prefer them over encyclopedias (secondary scholarly sources). A good place to start looking is google scholar Herbal Medicine God of medicine knowledge of diseases and human anatomy Needs at least one picture related to the topic