When writing scientific papers, it is always inevitable to quote the research results of predecessors, especially in the preface and discussion. So how to write the author's name by citing other people's research in the article? In fact, the rule is very simple, usually only the first author's surname is written. Most articles have more than one author, so add etal. After the surname of the first author, it means that the names of other authors are not listed. Here is "etc", which can be written in italics or without punctuation.