Griffiths, P. E. (1997). What emotions really are: The problem of psychological categories. University of Chicago Press.
Lua i Stíl Chicago (17ú heag.)Griffiths, Paul E. What Emotions Really Are: The Problem of Psychological Categories. Chicago, Ill.: University of Chicago Press, 1997.
Lua MLA (9ú heag.)Griffiths, Paul E. What Emotions Really Are: The Problem of Psychological Categories. University of Chicago Press, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.