Cita APA (7a ed.)
Biological Subtances: International Standards and reference Reagents l990. World Health Organization.
Cita Chicago Style (17a ed.)
Biological Subtances: International Standards and Reference Reagents L990. Geneva: World Health Organization.
Cita MLA (9a ed.)
Biological Subtances: International Standards and Reference Reagents L990. World Health Organization.
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