APA (7th ed.) Citation

Walker, H. M. (1958). Elementary statistical methods (rev. ed.). Holt, Rinehart and Winston.

Chicago Style (17th ed.) Citation

Walker, Helen M. Elementary Statistical Methods. rev. ed. New York: Holt, Rinehart and Winston, 1958.

MLA (9th ed.) Citation

Walker, Helen M. Elementary Statistical Methods. rev. ed. Holt, Rinehart and Winston, 1958.