Gaya APA

Beauchamp, T, L, &, C, J, F. (1994). Principles of biomedical ethics, 4th ed. . Oxford UP: Oxford UP.

Gaya MLA

Beauchamp, Tom, L., &, Childress,, James, F.. "Principles of biomedical ethics, 4th ed. ". Oxford UP: Oxford UP, 1994. Buku.