\usepackage{lineno} \linenumbers \usepackage{natbib} \bibliographystyle{abbrvnat} %plainnat \setcitestyle{authoryear} %numbers \documentclass{article} \usepackage{amsfonts,amsmath,amssymb} \usepackage{graphicx} \usepackage{color} \usepackage{url} \usepackage{lineno} \linenumbers \bibliographystyle{plain}