Cita APA (7a ed.)

Walker, H. M. (1969). Elementary statistical methods (3rd ed.). Holt, Rinehart and Winston.

Cita Chicago Style (17a ed.)

Walker, Helen Mary. Elementary Statistical Methods. 3rd ed. New York: Holt, Rinehart and Winston, 1969.

Cita MLA (9a ed.)

Walker, Helen Mary. Elementary Statistical Methods. 3rd ed. Holt, Rinehart and Winston, 1969.