James K. A. Smith (2006). “Who's Afraid of Postmodernism? (The Church and Postmodern Culture): Taking Derrida, Lyotard, and Foucault to Church”, p.28, Baker Academic
Henry Tudor (1834). “Narrative of a tour in North America: comprising Mexico, the mines of Real de Monte, the United States, and the British colonies; with an excursion to the island of Cuba. In a series of letters, written in the years 1831-2”, p.233