(1989). Biochemicals organic compounds for research and diagnostic reagents. USA: Sigma chemical company.
Chicago-tyylinen lähdeviittausBiochemicals Organic Compounds for Research and Diagnostic Reagents. USA: Sigma chemical company, 1989.
MLA-viiteBiochemicals Organic Compounds for Research and Diagnostic Reagents. USA: Sigma chemical company, 1989.
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