APA-referens (7:e uppl.)

Williams, T. I. (1987). The history of invention. Facts on File.

Chicago-referens (17:e uppl.)

Williams, Trevor Illtyd. The History of Invention. New York, N Y: Facts on File, 1987.

MLA-referens (9:e uppl.)

Williams, Trevor Illtyd. The History of Invention. Facts on File, 1987.