APA-viite (7. p.)

Portella, M., Harmer, C., Flint, J., Cowen, P., & Goodwin, G. (2004). Elevated waking cortisol levels in neuroticism: A biological vulnerability factor for depressive disorders?

Chicago-viite (17. p.)

Portella, M., C. Harmer, J. Flint, P. Cowen, ja G. Goodwin. Elevated Waking Cortisol Levels in Neuroticism: A Biological Vulnerability Factor for Depressive Disorders? 2004.

MLA-viite (9. p.)

Portella, M., et al. Elevated Waking Cortisol Levels in Neuroticism: A Biological Vulnerability Factor for Depressive Disorders? 2004.

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