Lewis, H. (1997). Why flip a coin?: The art and science of good decisions. John Wiley & Sons.
Chicago-čujuhus (17. p.)Lewis, H. Why Flip a Coin?: The Art and Science of Good Decisions. New York: John Wiley & Sons, 1997.
MLA-čujuhus (9. p.)Lewis, H. Why Flip a Coin?: The Art and Science of Good Decisions. John Wiley & Sons, 1997.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.