Guaspari, J. (1985). I Know it when I see it: A modern fable about quality. Amacom.
Chicago-čujuhus (17. p.)Guaspari, John. I Know It When I See It: A Modern Fable About Quality. New York: Amacom, 1985.
MLA-čujuhus (9. p.)Guaspari, John. I Know It When I See It: A Modern Fable About Quality. Amacom, 1985.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.