[Plugin: Make PDF Newspaper] adding author by line to post

Any suggestions on how to modify this code so we can get the author byline in the post? It would be great to have that for a newspaper with many authors!

public function addItem($title, $content, $date=0, $author)
	{
		$cancel_add = false;
		$html = '<div class="heading-div" style="page-break-inside: avoid;"><h1 style="line-height: 1.2;">'.$title.'</h1>';
		$html .= '<tcpdf method="clearEmptyLnSpace" />';
		if ((int)$date != 0) {
			$html .= '<p>'.date_i18n(get_option('date_format').' '.get_option('time_format'), $date).'</p>';
		}
		$html .= '</div>';
			$html .= '<p>'get_author().'</p>';
		//if (preg_match('/The ska and dub/i', $content)) { die($content); }
		$html .= $content;