https://www.cnblogs.com/baiting/p/6395193.html
包：natbib 内有使用说明
https://blog.csdn.net/sweet_dew/article/details/43451475
.bib 文件确保每个条目都有 作者 、年 字段
https://blog.csdn.net/ywh15387127537/article/details/82969247
小木虫上的建议：
在正文中实现作者+年代的参考文献引用格式，并且参考文献列表没有编号但带缩进
（无法实现\citeyear引用）
下一个elsevier的latex模板，然后bib格式选择
\bibliographystyle{model5-names}
就可以了，不需要natbib，
\usepackage[round]{natbib}
\begin{document}
%正文
\bibliography{Bibfile}
\bibliographystyle{apa}
\end{document}
Latex 中cite的使用
（一）、设置上标显示的命令
\citet{jon90} --> Jones et al. (1990)
\citet[chap. 2]{jon90} --> Jones et al. (1990, chap. 2)
\citep{jon90} --> (Jones et al., 1990)
\citep[chap. 2]{jon90} --> (Jones et al., 1990, chap. 2)
\citep[see][]{jon90} --> (see Jones et al., 1990)
\citep[see][chap. 2]{jon90} --> (see Jones et al., 1990, chap. 2)
\citet*{jon90} --> Jones, Baker, and Williams (1990)
\citep*{jon90} --> (Jones, Baker, and Williams, 1990)
此外还有诸如只引作者名字的\citeauthor，\citeyear
| \citeauthor{jon90} | --> | Jones et al. |
| \citeauthor*{jon90} | --> | Jones, Baker, and Williams |
| \citeyear{jon90} | --> | 1990 |
| \citeyearpar{jon90} | --> | (1990) |
多个参考文献引用：
| \citet{jon90,jam91} | --> | Jones et al. (1990); James et al. (1991) |
| \citep{jon90,jam91} | --> | (Jones et al., 1990; James et al. 1991) |
| \citep{jon90,jon91} | --> | (Jones et al., 1990, 1991) |
| \citep{jon90a,jon90b} | --> | (Jones et al., 1990a,b) |
不同的latex编译环境下有不同额格式，如：
| \citet{jon90} | --> | Jones et al. [21] |
| \citet[chap. 2]{jon90} | --> | Jones et al. [21, chap. 2] |
| \citep{jon90} | --> | [21] |
| \citep[chap. 2]{jon90} | --> | [21, chap. 2] |
| \citep[see][]{jon90} | --> | [see 21] |
| \citep[see][chap. 2]{jon90} | --> | [see 21, chap. 2] |
| \citep{jon90a,jon90b} | --> | [21, 32] |
此外，还有以上两个命令对应的去掉括号的命令：
| \citealt{jon90} | --> | Jones et al. 1990 |
| \citealt*{jon90} | --> | Jones, Baker, and Williams 1990 |
| \citealp{jon90} | --> | Jones et al., 1990 |
| \citealp*{jon90} | --> | Jones, Baker, and Williams, 1990 |
| \citealp{jon90,jam91} | --> | Jones et al., 1990; James et al., 1991 |
| \citealp[pg. 32]{jon90} | --> | Jones et al., 1990, pg. 32 |
| \citetext{priv. comm.} | --> | (priv. comm.) |