APA (7th ed.) Citation

Kilpatrick, W. H. (1933). The educational frontier. D. Appleton-Century Company.

Chicago Style (17th ed.) Citation

Kilpatrick, William Heard. The Educational Frontier. New York, New York: D. Appleton-Century Company, 1933.

MLA (9th ed.) Citation

Kilpatrick, William Heard. The Educational Frontier. D. Appleton-Century Company, 1933.