John Wiley & Sons, 2003
Buku Teks SO
Eysenck, Michael W.
Psychology Press, 1995
Buku Referensi
edited by Pieter J.D. Drenth, Henk Thierry, Charles J. de Wolff
Routledge, 1998
Buku Referensi
edited by Ray Woolfe, Windy Dryden, Sheelagh Strawbridge
Sage Publications, 2003
Buku Referensi
Eysenck, Michael W.
Psychology Press, 2000
Buku Referensi