APA (7th ed.) Citation

Ball, L., Tully, R. J., & Egan, V. (2016). The SAPAS, personality traits, and personality disorder. Guilford Press.

Chicago Style (17th ed.) Citation

Ball, Laura, Ruth J. Tully, and Vincent Egan. The SAPAS, Personality Traits, and Personality Disorder. Guilford Press, 2016.

MLA (9th ed.) Citation

Ball, Laura, et al. The SAPAS, Personality Traits, and Personality Disorder. Guilford Press, 2016.