References
Coulter, David H (2002) Anatomy of Hatha Yoga; A Manual for Students, Teachers and Practitioners, Body and Breath, Honesdale PA, USA
Hewitt, J (1991) The Complete Yoga Book, Rider, London, UK
Iyengar, BKS (2001) Light on Yoga, Thorsons, London, UK
Saraswati, Swami Satyananda (1996), Asana, Pranayama, Mudra, Bandha, Bihar School of Yoga, Bihar, India.