Szász Ilma (1992). States of consciousness induced by mantra meditation of some Eastern and Christian ways respectively. Archive for the Psychology of Religion, Volume 20, Issue 1, pp. 219–233, DOI: 10.1163/157361292X00167نسخة محفوظة 1 December 2017 على موقع واي باك مشين.
Szász Ilma (1992). States of consciousness induced by mantra meditation of some Eastern and Christian ways respectively. Archive for the Psychology of Religion, Volume 20, Issue 1, pp. 219–233, DOI: 10.1163/157361292X00167نسخة محفوظة 1 December 2017 على موقع واي باك مشين.