Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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