L. Veselka, J. A. Schermer, R. A. Martin, L. F. Cherkas, T. D. Spector, and P. A. Vernon, “A Behavioral Genetic Study of Relationships Between Humor Styles And The Six HEXACO Personality Factors”, Eur J Psychol, vol. 6, no. 3, p. Article e206, Aug. 2010.