Παραπομπή σε μορφή APA (7η εκδ.)

Harwood, D., Hawton, K., Hope, T., Harriss, L., & Jacoby, R. (2006). Life problems and physical illness as risk factors for suicide in older people: A descriptive and case-control study.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Harwood, D., K. Hawton, T. Hope, L. Harriss, και R. Jacoby. Life Problems and Physical Illness as Risk Factors for Suicide in Older People: A Descriptive and Case-control Study. 2006.

Παραπομπή σε μορφή MLA (9th εκδ.)

Harwood, D., et al. Life Problems and Physical Illness as Risk Factors for Suicide in Older People: A Descriptive and Case-control Study. 2006.