DEGRAZIA, D., & BALLARD, J. B. (2011). Biomedical Ethics. Mc Graw-Hill.
Lua i Stíl Chicago (17ú heag.)DEGRAZIA, David, agus Jeffrey Brand BALLARD. Biomedical Ethics. Mc Graw-Hill, 2011.
Lua MLA (9ú heag.)DEGRAZIA, David, agus Jeffrey Brand BALLARD. Biomedical Ethics. Mc Graw-Hill, 2011.
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