APA

Ehlers H. J., Lee G. C., . (1959). Crucial issues in education. New York: Holt, Rinehart and Winston.

Chicago

Ehlers Henry J, Lee Gordon Canfield, . 1959. Crucial issues in education. New York: Holt, Rinehart and Winston.

Harvard

Ehlers H. J., Lee G. C., . (1959). Crucial issues in education. New York: Holt, Rinehart and Winston.

MLA

Ehlers Henry J, Lee Gordon Canfield, . Crucial issues in education. New York: Holt, Rinehart and Winston. 1959.