Harman, W. W. (1976). An incomplete guide to the future. San Francisco Book Co. ; trade distribution by Simon and Schuster.
Chicago-referens (17:e uppl.)Harman, Willis W. An Incomplete Guide to the Future. San Francisco : New York: San Francisco Book Co. ; trade distribution by Simon and Schuster, 1976.
MLA-referens (8:e uppl.)Harman, Willis W. An Incomplete Guide to the Future. San Francisco Book Co. ; trade distribution by Simon and Schuster, 1976.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.