Thomas Gray, Thomas PARK (F.S.A.) (1808). “The poetical works of Thomas Gray, etc. With a separate titlepage bearing the imprint of John Sharpe, London, dated 1805”, p.62
Chogyam Trungpa (2013). “The Tantric Path of Indestructible Wakefulness (volume 3): The Profound Treasury of the Ocean of Dharma, Volume Three”, p.761, Shambhala Publications