Cita APA

Walker, H. M., & Lev, J. (1969). Elementary statistical methods (3. ed.). New York: Holt, Rinehart and Winston.

Citación estilo Chicago

Walker, Hellen M., y Joseph Lev. Elementary Statistical Methods. 3. ed. New York: Holt, Rinehart and Winston, 1969.

Cita MLA

Walker, Hellen M., y Joseph Lev. Elementary Statistical Methods. 3. ed. New York: Holt, Rinehart and Winston, 1969.