Citace podle APA (7th ed.)

Hurd, P. D. H. (1969). New directions in teaching secondary school science. Rand McNally.

Citace podle Chicago (17th ed.)

Hurd, Paul De Hart. New Directions in Teaching Secondary School Science. Chicago: Rand McNally, 1969.

Citace podle MLA (8th ed.)

Hurd, Paul De Hart. New Directions in Teaching Secondary School Science. Rand McNally, 1969.

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