A great many books exist on the topic of dance. Once again, I've broken them down into categories in the column to your left.

Below are a few of my own personal favourites. Enjoy!
Costuming from the HipSerpent of the Nile: Women and Dance in the Arab WorldThe Tribal Bible, Exploring The Phenomenon That Is American Tribal Style Bellydance
Costuming from the Hip
by Dawn Devine Brown
$22.95
This introductory costuming book shows you how to make a variety of costume elements (including a section for men).
Serpent of the Nile: Women and Dance in the...
by Wendy Buonaventura

Perhaps the most beautiful book on the dance. Gorgeous illustrations and photos make this a must-have.
The Tribal Bible, Exploring The Phenomenon ...
by Kajira Djoumahna

May be out of print, but see if you can nab a copy. Invaluable for ATS, tribaret, and tribal fusion dancers.
Dance Imagery for Technique and PerformanceSnake Hips: Belly Dancing and How I Found True LoveThe Belly Dance Book : Rediscovering the Oldest Dance
Dance Imagery for Technique and Performance
by Eric Franklin
$19.77
Excellent exercises to aid in movement exploration. Good for dancers and instructors.
Snake Hips: Belly Dancing and How I Found T...
by Anne Thomas Soffee
$11.21
Fun, riotous book about finding love and dance skills. While reading this, your face will hurt from smiling!
The Belly Dance Book : Rediscovering the Ol...
by Tazz Richards

A thorough compendium on many aspects of the dance: costuming, performance, history, male dancers, etcetera.