Hurd, P. D. (1969). New Directions in teaching secondary school science. Rand McNally.
Citação norma ChicagoHurd, Paul Dehart. New Directions in Teaching Secondary School Science. Chicago: Rand McNally, 1969.
Citação norma MLAHurd, Paul Dehart. New Directions in Teaching Secondary School Science. Rand McNally, 1969.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.