Query By Post Type With Date Desc

<?
wp_reset_query();
query_posts( array( 'post_type' => 'work', 'orderby' => 'post_date', 'order' => 'DESC', 'numberposts' => -1 ) ); 

	if ( have_posts() ) : 
		while ( have_posts() ) : 
			the_post(); 
            the_title();
			echo "<br/>"; 
		endwhile; 
    endif;
?>