Percy Bysshe Shelley (1821). “Queen Mab, a philosophical poem, with notes. [reputed to have been given by the author to W. Francis. Wanting the title-leaf, dedication and part of the last leaf].”, p.110
Percy Bysshe Shelley (1840). “Journal of a six weeks' tour. Letters from Geneva. Journal at Geneva: ghost stories, Journal: return to England. Letters from Italy”, p.83