"Henry Cavill Talks Comics Influences, Filming the Action Scenes, Physical Training, and More on the Set of MAN OF STEEL". Interview with Steve Weintraub, collider.com. May 30, 2013.
Nicholas Culpeper, Parkins (1814). “The English Physician; Enlarged with Three Hundred and Sixty-nine Medicines Made of English Herbs: Not in Any Former Impression of Culpeper's British Herbal ... to which is Added The Family Physician ... and A Present for the Ladies”, p.350