Nuffield Foundation. Science Teaching Project. (1971). Students' book unit 2: Physics, electricity, electrons, and energy levels. Nuffield Advanced Science/Longman.
Cita Chicago (17th ed.)Nuffield Foundation. Science Teaching Project. Students' Book Unit 2: Physics, Electricity, Electrons, and Energy Levels. London: Nuffield Advanced Science/Longman, 1971.
Cita MLA (9th ed.)Nuffield Foundation. Science Teaching Project. Students' Book Unit 2: Physics, Electricity, Electrons, and Energy Levels. Nuffield Advanced Science/Longman, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.