APA

Beauchamp T. L., Childress J. F., . (2001). Principles of biomedical ethics. Oxford: University Press.

Chicago

Beauchamp Tom L, Childress James F, . 2001. Principles of biomedical ethics. Oxford: University Press.

Harvard

Beauchamp T. L., Childress J. F., . (2001). Principles of biomedical ethics. Oxford: University Press.

MLA

Beauchamp Tom L, Childress James F, . Principles of biomedical ethics. Oxford: University Press. 2001.