APA (7th ed.) Citation

Frederick, R. W., & Ragsdale, C. E. (1938). Directing learning. Appleton-Century-Crofts.

Chicago Style (17th ed.) Citation

Frederick, Robert Wendell, and Clarence E. Ragsdale. Directing Learning. New York: Appleton-Century-Crofts, 1938.

MLA (9th ed.) Citation

Frederick, Robert Wendell, and Clarence E. Ragsdale. Directing Learning. Appleton-Century-Crofts, 1938.