These can be added as either Story's or normal Pages (depending on whether or not you want them to appear in the RSS feed), but with the News type of Book Review or Software Review.
In order to ensure they appear in the correct order in the Reviews list you need to enter the date or the review into the Sort field in the form: ccyy-mm.
The start of the review should be in the following format (assuming Markdown input), to ensure consistency and that the correct BGJ is shown in the Review list (note that there is a blank line between the date/picture and the reviewer):
<i>BGJ 154 Winter 2010</i>
<img src="/files/review_winninggo.jpg" class="floatright" width=300>
<i>Reviewer: Glynn Forsythe</i>
In addition a reference should be added to the relevant page about that issue of the BGJ, i.e. /bgj/bgjNNN.html, in the form:
<li>Book Review: <a href="URL (node/NNNN)">TITLE</a></li>