APA ציטוט

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

Chicago Style (17th ed.) Citation

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

ציטוט MLA

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