编辑与文献石油大学出版社李国兴文献一般可以分为一级文献、二级文献和三级文献。一级文献是著作者以自己研究成果为基本素材创作或撰写的原始文献，如专著、研究报告、会议文献、档案等。一级文献是科学研究的基本参考文献，是科学、技术、文化的发展基础。二级文献是一... Editorial and Literature University Press Li Guoxing literature generally can be divided into a literature, two literature and three literature. The first-level document is the original document written or written by the author based on his research results, such as monographs, research reports, conference documents, archives and so on. The first grade literature is the basic reference for scientific research and the basis for the development of science, technology and culture. Secondary literature is a ...