Hatfield, C. (1973). The scientist and ethical decision. IVP.
Cita Chicago (17th ed.)Hatfield, Charles. The Scientist and Ethical Decision. Illinois: IVP, 1973.
Cita MLA (9th ed.)Hatfield, Charles. The Scientist and Ethical Decision. IVP, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.