Szondi's personality theory in the year 2004 : Second volume. Validity and reliability for the Szondi test : drive emotions and colour preferences - Borg, Jaakko G., 1927-2005 (Tampere : Pilot-kustannus, 2005)
V. 1 verschenen o.d.t. Szondi's personality theory in the year 2000 : Some experimental specifications