<?php wp_link_pages( array( 'before' => '<div class="page-links"><span class="page-links-title">' . __( 'Pages:', 'twentythirteen' ) . '</span>', 'after' => '</div>', 'link_before' => '<span>', 'link_after' => '</span>' ) ); ?>

<?php the_content(); ?>

<?php wp_link_pages(); ?>

<?php the_content(); ?>
<?php wp_link_pages(); ?>