i am willing to publish a paper in a journal that require the HARVARD reference style i uploaded the .bib file but the output didn t comprise the references list so i have been told to use the bibitem to enter the references manually, however i get an error ; bibliography not compatible with author year citation (natbib) any help thank you in advance
here are all the packages i used for the article
\documentclass[Afour,sageh,times]{sagej}
\usepackage{mathtools,amsmath,amsfonts,amssymb,nccmath}
\usepackage{commath}
\usepackage{fontenc}
\usepackage{babel}
\usepackage{multirow}
\usepackage{slashbox}
\DeclarePairedDelimiter{\ceil}{\lceil}{\rceil}
\usepackage{cuted}
\setlength\stripsep{3pt plus 1pt minus 1pt}
\usepackage{stfloats}
\usepackage{adjustbox}
\usepackage{lipsum}
%\usepackage{natbib}
\usepackage[table]{xcolor}
\usepackage{colortbl}
\usepackage{algorithm}
\usepackage{algorithmic}
\usepackage{moreverb,url}
\usepackage[colorlinks,bookmarksopen,bookmarksnumbered,citecolor=red,urlcolor=red]{hyperref}
\usepackage{graphicx,float}
