Dyfyniad APA

International Organization for Standardization. (1981). Statistical methods (2nd ed.). ISO Central Secretariat.

Dyfyniad Arddull Chicago

International Organization for Standardization. Statistical Methods. 2nd ed. Geneva: ISO Central Secretariat, 1981.

Dyfyniad MLA

International Organization for Standardization. Statistical Methods. 2nd ed. ISO Central Secretariat, 1981.

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