APA

Childress J. F., Beauchamp T. L., . (1983). Principles of biomedical ethics / Tom L. Beauchamp, James F. Childress. New York: Oxford University Press.

Chicago

Childress James F, Beauchamp Tom L, . 1983. Principles of biomedical ethics / Tom L. Beauchamp, James F. Childress. New York: Oxford University Press.

Harvard

Childress J. F., Beauchamp T. L., . (1983). Principles of biomedical ethics / Tom L. Beauchamp, James F. Childress. New York: Oxford University Press.

MLA

Childress James F, Beauchamp Tom L, . Principles of biomedical ethics / Tom L. Beauchamp, James F. Childress. New York: Oxford University Press. 1983.