Dyfyniad APA

World Health Organization. (2012). WHO Expert Committee on Biological Standardization (Fifty-ninth report.). World Health Organization.

Dyfyniad Arddull Chicago

World Health Organization. WHO Expert Committee on Biological Standardization. Fifty-ninth report. Geneva, Switzerland: World Health Organization, 2012.

Dyfyniad MLA

World Health Organization. WHO Expert Committee on Biological Standardization. Fifty-ninth report. World Health Organization, 2012.

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