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.
芝加哥风格引文Harwood, D., K. Hawton, T. Hope, L. Harriss, 与 R. Jacoby. Life Problems and Physical Illness as Risk Factors for Suicide in Older People: A Descriptive and Case-control Study. 2006.
MLA引文Harwood, D., et al. Life Problems and Physical Illness as Risk Factors for Suicide in Older People: A Descriptive and Case-control Study. 2006.
警告：这些引文格式不一定是100％准确.