Chogyam Trungpa (2010). “The Collected Works of Chogyam Trungpa: Volume One: Born in Tibet; Meditation in Action; Mudra; Selected Writings”, p.298, Shambhala Publications
Chogyam Trungpa (2010). “The Collected Works of Chogyam Trungpa: Volume Eight: Great Eastern Sun; Shambhala; Selected Writings”, p.19, Shambhala Publications
Chogyam Trungpa (2010). “The Collected Works of Chogyam Trungpa: Volume Eight: Great Eastern Sun; Shambhala; Selected Writings”, p.19, Shambhala Publications