Hardison, O. B. (1990). Disappearing through the skylight: Culture and technology in the twentieth century. Penguin Books.
Chicago-referens (17:e uppl.)Hardison, O. B. Disappearing Through the Skylight: Culture and Technology in the Twentieth Century. New York: Penguin Books, 1990.
MLA-referens (9:e uppl.)Hardison, O. B. Disappearing Through the Skylight: Culture and Technology in the Twentieth Century. Penguin Books, 1990.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.