APA (7th ed.) Citation

Walker, H. M. (1931). Studies in the history of statistical method: With special reference to certain educational problems (Repr.). Williams & Wilkins.

Chicago Style (17th ed.) Citation

Walker, Helen M. Studies in the History of Statistical Method: With Special Reference to Certain Educational Problems. Repr. Baltimore: Williams & Wilkins, 1931.

MLA (9th ed.) Citation

Walker, Helen M. Studies in the History of Statistical Method: With Special Reference to Certain Educational Problems. Repr. Williams & Wilkins, 1931.