APA

Beauchamp T. L., Childress J. F., . (1994). Principles of biomedical ethics. : Oxford University Press.

Chicago

Beauchamp Tom L, Childress James F, . 1994. Principles of biomedical ethics. : Oxford University Press.

Harvard

Beauchamp T. L., Childress J. F., . (1994). Principles of biomedical ethics. : Oxford University Press.

MLA

Beauchamp Tom L, Childress James F, . Principles of biomedical ethics. : Oxford University Press. 1994.