Originally published: in 3 vols. as Astanga yoga by Jean Hall. London: Lorenz, 2004 - Meditation by Doriel Hall. London: Lorenz 2003 - Chakra healing by Sue and Simon Lilly. London: Lorenz, 2002.
The practical encyclopedia of Astanga yoga & meditation : dynamic breath-control yoga routines and yogic meditation practices for optimum physical and mental health by Jean Hall. ISBN 9780754816065. Published by Lorenz in 2006. Publication and catalogue information, links to buy online and reader comments.