Hurd, P. D. (1969). New Directions in teaching secondary school science. Rand McNally.
Style de citation Chicago (17e éd.)Hurd, Paul Dehart. New Directions in Teaching Secondary School Science. Chicago: Rand McNally, 1969.
Style de citation MLA (9e éd.)Hurd, Paul Dehart. New Directions in Teaching Secondary School Science. Rand McNally, 1969.
Attention : ces citations peuvent ne pas être correctes à 100%.