Freund, P. A. (1970). Experimentation with human subjects. G. Braziller.
Cita Chicago Style (17a ed.)Freund, Paul A. Experimentation with Human Subjects. New York: G. Braziller, 1970.
Cita MLA (9a ed.)Freund, Paul A. Experimentation with Human Subjects. G. Braziller, 1970.
Precaución: Estas citas no son 100% exactas.