First plugin help please

I am writing my first plugin and everything’s working fine. I am now writing an admin panel for it following the instructions in the codex, but have hit a problem. I have added the options to the database but am struggling to read them into the panel. This is the code
<h2>TJs Options</h2>
<fieldset name="set1">
<legend><?php _e('Display Name', 'Localization name') ?></legend>
<table><tr>
<td><b>Display Name</b></td><td> <input type="text" name="tj_sn_title" value=<?php get_option('tj_sn_name') ?> /></td>
</tr></table>
</fieldset>
Using this code displays the legend the title and the text box containing a forward slash – when it should contain the phrase Test Text (stored in the database).
I thought the get_option($option) hook retrieved data from the options table. What am I doing wrong