Widiger, T. ., & Sanderson, C. . (1969). The convergent and discriminant validity of the MCMI as a measure of the DSM-III personality disorders. Journal of Personality Assessment, 51(2), 228-42. https://doi.org/10.1207/s15327752jpa5102_7 (Original work published 1969)

Widiger, T. ., Sanderson, C. ., & Warner, L. . (1969). The MMPI, prototypal typology, and borderline personality disorder. Journal of Personality Assessment, 50(4), 540-53. https://doi.org/10.1207/s15327752jpa5004_2 (Original work published 1969)