First of all, we need to know what SCI (Science Citation Index) is. SCI is a citation index database published by Clarivate Analytics, which contains highly cited papers and important journal articles in the fields of science, technology and medicine all over the world. Therefore, when we do academic research, we often need to use SCI to find relevant documents.

Secondly, you need to master the correct citation format. Different disciplines may have different citation format requirements, but generally speaking, the citation format of SCI papers should include the following parts: author's name, publication year, article title, journal name, volume number, issue number and page number. For example, an article published in Nature can be quoted as follows: "Smith et al. (20 19) discovered …", where "Smith et al." stands for the author's name, "20 19" stands for the publication year, "Nature" stands for the journal name, "65438+.

In addition to the correct citation format, we also need to pay attention to the following points:

1. Make sure that the referenced file is reliable. When using SCI to find documents, we should try to choose journals or conference proceedings with high citation rate and great influence. In addition, you can also check the author background and institutional information of the literature to determine its credibility.

2. Pay attention to the time range of the literature. In academic research, we need to choose a suitable time range for literature retrieval and citation according to our own research purposes and problems. For example, if our research focuses on the influencing factors of a historical event, then we need to find relevant documents before and after the event.

3. Avoid over-quoting. Although references are very important for academic research, too many citations will leave a bad impression on readers. Therefore, when writing a thesis, you should try to choose high-quality literature related to your research direction to cite, and avoid repeating the same article or other works by the same author.

In a word, quoting documents correctly is an essential part of academic research. By mastering the skills of SCI and the correct citation format, we can make better use of this tool to support our own research work and improve the quality and credibility of the paper.