John Bunyan, Robert Hawker (1822). “The Pilgrim's Progress, from this World, to that which is to Come; Delivered Under the Similitude of a Dream; Wherein is Discovered, the Manner of His Setting Out, His Dangerous Journey, and Safe Arrival at the Desired Country: Containing the Pilgrimage of His Wife and Children, and Their Safe Arrival”, p.541
"The Feynman Lectures on Physics". Book by Richard P. Feynman. Volume I; lecture 1, 'Atoms in Motion'; section 1-2, 'Matter is made of atoms'; p. 1-3, 1964.