Cita APA (7a ed.)

Downie, N. M., & Heath,R.W. (1983). Basic statistical methods (5th ed.). National Book Store.

Cita Chicago Style (17a ed.)

Downie, Norville M., y Heath,R.W. Basic Statistical Methods. 5th ed. Manila: National Book Store, 1983.

Cita MLA (9a ed.)

Downie, Norville M., y Heath,R.W. Basic Statistical Methods. 5th ed. National Book Store, 1983.