%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Gielis2021} {\textquotedblleft}\textit{Phi-bonacci in Ancient Greece}{\textquotedblright}. Gielis J, Symmetry : culture and science \textbf{32}, 25 (2021).   http://doi.org/10.26830/SYMMETRY_2021_1_025

\end{thebibliography}

\end{document}

