答案1
这看起来很像biblatex-nejm
。
\documentclass[british]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{babel}
\usepackage{csquotes}
\usepackage[style=nejm, backend=biber]{biblatex}
\addbibresource{biblatex-examples.bib}
\begin{document}
\autocite{sigfridsson,aksin}
\printbibliography
\end{document}