APA-ийн эшлэл(7 дахь хэвлэлт)

Freeman, J. M., & McDonnell, K. (2001). Tough decisions: Cases in medical ethics (2nd ed.). Oxford University Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Freeman, John Mark, ба Kevin McDonnell. Tough Decisions: Cases in Medical Ethics. 2nd ed. Oxford ; New York: Oxford University Press, 2001.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Freeman, John Mark, ба Kevin McDonnell. Tough Decisions: Cases in Medical Ethics. 2nd ed. Oxford University Press, 2001.