Shafiei, Bita. “Big Five Personality Traits and Dream Recall Frequency in Spontaneous Vs. Self-Trained Lucid Dreamers”. International Journal of Dream Research 12, no. 2 (October 1, 2019): 8-13. Accessed February 26, 2020. https://journals.ub.uni-heidelberg.de/index.php/IJoDR/article/view/59710.