KELLY, W. E.; MATHE, J. R.; YU, Q. Specific Versus Scaled Estimates: A Comparison of Two Approaches to Measuring Retrospective Nightmare Frequency. International Journal of Dream Research, [S. l.], v. 11, n. 2, p. 203–206, 2018. DOI: 10.11588/ijodr.2018.2.48486. Disponível em: https://journals.ub.uni-heidelberg.de/index.php/IJoDR/article/view/48486. Acesso em: 5 oct. 2022.