%&LaTeX
\documentclass{article}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{textcomp}

\begin{document}

\begin{thebibliography}{1}

\bibitem{Shi_etal2023} {\textquotedblleft}\textit{A new program to estimate the parameters of Preston{\textquoteright}s equation, a general formula for describing the egg shape of birds}{\textquotedblright}. Shi P, Wang L, Quinn BKK, Gielis J, Symmetry \textbf{15}, 231 (2023).   http://doi.org/10.3390/SYM15010231

\end{thebibliography}

\end{document}

