London. Nuffield-Chelsea Curriculum Trust & Dorling, G. (1990). Nuffield science for key stage 3: Science year 9. Longman Group.
Cita Chicago Style (17a ed.)London. Nuffield-Chelsea Curriculum Trust y Geoffrey Dorling. Nuffield Science for Key Stage 3: Science Year 9. London: Longman Group, 1990.
Cita MLA (9a ed.)London. Nuffield-Chelsea Curriculum Trust y Geoffrey Dorling. Nuffield Science for Key Stage 3: Science Year 9. Longman Group, 1990.
Precaución: Estas citas no son 100% exactas.