Yoga for Pregnancy and Birth: Teach Yourself by Uma Dinsmore-Tuli
£
Ashtanga Yoga Manual (any edition) by David Swenson
The Yoga Sutras of Patanjali by Swami Satchitananda
Yoga Anatomy (any edition) by Leslie Kaminoff
The Power of Ashtanga Yoga II by Kino MacGregor
The Heart of Yoga: Developing Personal Practice: Developing a Personal Practice by TKV Desikachar
Step-by-Step Yoga for Conception, Pregnancy, Birth and Beyond by Francoise Barbira Freedman