Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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