\documentclass{article}
\setlength{\parindent}{0pt}
\begin{document}
A paragraph of text.
\bigskip
Author\\
Place\\
Date\\
\end{document}
答案1
将左对齐的表格向右对齐:
\documentclass{article}
\setlength{\parindent}{0pt}
\begin{document}
A paragraph of text.
\begin{flushright}
\begin{tabular}{@{}l@{}}
Author\\
Place\\
Date
\end{tabular}
\end{flushright}
\end{document}