Nuffield Foundation. Science Teaching Project. (1966). Nuffield biology: Introducing living things. Nuffield Foundation.
Cita Chicago (17th ed.)Nuffield Foundation. Science Teaching Project. Nuffield Biology: Introducing Living Things. London: Nuffield Foundation, 1966.
Cita MLA (9th ed.)Nuffield Foundation. Science Teaching Project. Nuffield Biology: Introducing Living Things. Nuffield Foundation, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.