Block, J. (1995). A contrarian view of the five-factor approach to personality description. Psychological Bulletin, 117, 187-215.
Clark, L.A. (1993). Personality Disorder Diagnosis: Limitations of the Five-Factor Model. Psychological Inquiry, 4(2), 100-104. Retrieved January 21, 2008, from Questia database: http://www.questia.com/PM.qst?a=o&d=77524910
Costa P, McCrae, Robert R. (1995) Solid ground in the wetlands of personality: A reply to Block. Psychological Bulletin. 117(2), 216-220 www.questia.com/PM.qst?a=o&d=77524936