برای درج زیرنویسهای چپ به راست از دستور \LTRfootnote استفاده کنید:
\documentclass{article}
\usepackage{xepersian}
\settextfont{Yas}
\begin{document}
\LTRfootnote{This is a left to right footnote.}
\setLTRbibitems
\begin{thebibliography}{99}
\resetlatinfont
\bibitem{1} Barbeau, E. J. \textit{Polynomials}. New York: Springer-Verlag, 1989.
\bibitem{2} Becker, T. and Weispfenning, V. \textit{Gr\"obner Bases: A Computational Approach to Commutative Algebra}. New York: Springer-Verlag, 1993.
\bibitem{3} Belardinelli, G. ``Fonctions hyperg\`eom\`etriques de plusieurs variables er r\`esolution analytique des \`equations alg\`ebriques g\`en\`erales.'' \textit{M\`emoral des Sci. Math}. \textbf{145}, 1960.
\bibitem{4} Bini, D. and Pan, V. Y. \textit{Polynomial and Matrix Computations, Vol. 1: Fundamental Algorithms}. Boston, MA: Birkh\"auser, 1994.
\bibitem{5} Borwein, P. and Erd\`elyi, T. \textit{Polynomials and Polynomial Inequalities}. New York: Springer-Verlag, 1995.
\bibitem{6} Chow, T. Y. ``What is a Closed-Form Number.'' \textit{Amer. Math. Monthly} \textbf{106}, 440-448, 1999.
\end{thebibliography}
\end{document}
