PHP – How can I add category to a code with post previews?

How can preview thumbnails + titles only from a category?
Right now the code is for showing all posts, but I only want to show posts from a one category.

Here is the code from a page template:

<?php
				$args = array( 'numberposts' => 12 );
				$homeposts = get_posts( $args );
				foreach($homeposts as $post) : setup_postdata($post); ?>

				<div class="homepost grid_4">

		 		<?php
					$thumb = get_post_thumbnail_id();
					$img_url = wp_get_attachment_url( $thumb,'full' ); //get full URL to image (use "large" or "medium" if the images too big)
					$image = aq_resize( $img_url, 300, 200, true ); //resize & crop the image
				?>

				<?php if($image) : ?>
				<a href="<?php the_permalink(); ?>"> <img  src="<?php echo $image ?>"/></a>
				<?php endif; ?>

				<h2> <a href="<?php the_permalink(); ?>"> <?php the_title(); ?> </a> </h2>
				<div class="home-meta"> <?php _e('Posted on', 'web2feel') ?>  <?php the_time('F j - Y'); ?>
 </div>
				<?php wpe_excerpt('wpe_excerptlength_index', ''); ?>
				<a class="readmore" href="<?php the_permalink(); ?>"> Read More </a>
				</div>

	         	<?php endforeach; ?>