APA (7th ed.) Citation

Walker, H. M. (1929). Studies in the history of statistical method: With special reference to certain educational problems. Williams and Wilkins Company.

Chicago Style (17th ed.) Citation

Walker, Helen M. Studies in the History of Statistical Method: With Special Reference to Certain Educational Problems. Baltimore: Williams and Wilkins Company, 1929.

MLA (9th ed.) Citation

Walker, Helen M. Studies in the History of Statistical Method: With Special Reference to Certain Educational Problems. Williams and Wilkins Company, 1929.