APA-viite (7. p.)
Weirich, P. Labeling Genetically Modified Food: The Philosophical and Legal Debate. Oxford University.
Chicago-viite (17. p.)
Weirich, Paul. Labeling Genetically Modified Food: The Philosophical and Legal Debate. Nueva York, EUA: Oxford University.
MLA-viite (9. p.)
Weirich, Paul. Labeling Genetically Modified Food: The Philosophical and Legal Debate. Oxford University.
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