APA

Beauchamp T. L., Childress J. F., . (2009). Principles of biomedical ethics. New York: Oxford University Press.

Chicago

Beauchamp Tom L, Childress James F, . 2009. Principles of biomedical ethics. New York: Oxford University Press.

Harvard

Beauchamp T. L., Childress J. F., . (2009). Principles of biomedical ethics. New York: Oxford University Press.

MLA

Beauchamp Tom L, Childress James F, . Principles of biomedical ethics. New York: Oxford University Press. 2009.