Schwartz, Cecilia, and Manuel Froufe. “Subliminal Messages for Increasing Self-Esteem: Placebo Effect”. The Spanish Journal of Psychology 4, no. 1 (January 1, 2001): 19. Accessed December 22, 2024. https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0101120019A.