The Cambridge Australian English Style Guide

Author: Pam Peters
Rough Price: $45 pb, $95 hc
Edition: First (1995)
Publisher: Cambridge University Press
ISBN: 0-521-57634-2 pb, 0-521-43401-7 hc

While this book is not nearly as authoritative (or funny) as Fowler, it is still a worthwhile buy. There are some great entries discussing things that Fowler never touches upon, especially when it comes to issues of style, rather than mere rules of grammar. Plus, it has the added bonus of being Australia specific. Buy Fowler first, then stick this one on your birthday list.