Παραπομπή APA

Emery, P. C., Wilson, K. G., & Kowal, J. (2014). Major depressive disorder and sleep disturbance in patients with chronic pain. Pulsus Group Inc.

Παραπομπή Chicago Style

Emery, Patricia C., Keith G. Wilson, και John Kowal. Major Depressive Disorder and Sleep Disturbance in Patients With Chronic Pain. Pulsus Group Inc, 2014.

Παραπομπή MLA

Emery, Patricia C., Keith G. Wilson, και John Kowal. Major Depressive Disorder and Sleep Disturbance in Patients With Chronic Pain. Pulsus Group Inc, 2014.

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