First, the library, which is the main source of traditional reference materials, is more convenient to search books related to reference in the library.
Secondly, China HowNet, the authoritative academic examination website in China, has cooperative relations with most schools. During the period of school, the section downloads papers for free in China Knowledge Network; There is a charge for off-campus downloading. Enter the category and area in official website website, and find the required reference materials through the document title;
Third, Baidu Academic can go to the search engine and enter the name in the search bar;
Fourth, other sources of information: in fact, in addition to the commonly used authoritative organizations, there are actually some professional websites that can be searched.