APA-referens (7:e uppl.)
Razeghi, A. (2008). The riddle: Where ideas come from and how to have better ones. Jossey-Bass.
Chicago-referens (17:e uppl.)
Razeghi, Andrew. The Riddle: Where Ideas Come from and How to Have Better Ones. San Francisco: Jossey-Bass, 2008.
MLA-referens (9:e uppl.)
Razeghi, Andrew. The Riddle: Where Ideas Come from and How to Have Better Ones. Jossey-Bass, 2008.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.