how to displaying review block (with ratings) on custom page in magento

<?php
$_product = $_item->getProduct(); //get the product in cart
$storeId = Mage::app()->getStore()->getId();
$summaryData = Mage::getModel('review/review_summary')
->setStoreId($storeId)
->load($_product->getId());

if ($summaryData['rating_summary']):?>
<div class="ratings">
<div class="rating-box">
<div class="rating" style="width:<?php echo $summaryData['rating_summary']; ?>%"></div>
</div>
</div>
<?php endif; ?>