Smith, T. G. (1975). Learning about magnetism (2. edition.). Chicago, III.: Encyclopaedia Britannica Educational.
Citación estilo ChicagoSmith, Thomas G. Learning About Magnetism. 2. edition. Chicago, III.: Encyclopaedia Britannica Educational, 1975.
Cita MLASmith, Thomas G. Learning About Magnetism. 2. edition. Chicago, III.: Encyclopaedia Britannica Educational, 1975.
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