APA (7th ed.) Citation

Cox, P. W. L., & Duff, J. C. (1948). Basic principles of guidance. Prentice-Hall.

Chicago Style (17th ed.) Citation

Cox, Philip Wescott Lawrence, and John Carr Duff. Basic Principles of Guidance. New York: Prentice-Hall, 1948.

MLA (9th ed.) Citation

Cox, Philip Wescott Lawrence, and John Carr Duff. Basic Principles of Guidance. Prentice-Hall, 1948.