Pence, G. E. (2007). The elements of bioethics. Boston: McGraw-Hill.
Trích dẫn kiểu ChicagoPence, Gregory E. The Elements of Bioethics. Boston: McGraw-Hill, 2007.
MLA引文Pence, Gregory E. The Elements of Bioethics. Boston: McGraw-Hill, 2007.
警告:這些引文格式不一定是100%准確.