Nuffield Foundation. Mathematics Project. (1967). Shape and size / Nuffield Foundation. Mathematics Project. Nuffield Foundation.
Cita Chicago (17th ed.)Nuffield Foundation. Mathematics Project. Shape and Size / Nuffield Foundation. Mathematics Project. New York: Nuffield Foundation, 1967.
Cita MLA (9th ed.)Nuffield Foundation. Mathematics Project. Shape and Size / Nuffield Foundation. Mathematics Project. Nuffield Foundation, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.