Analysis of information sources in references of the Wikipedia article "Pyridine" in English language version.
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{{cite book}}: ISBN / Date incompatibility (help){{cite book}}: |work= ignored (help){{cite book}}: CS1 maint: location missing publisher (link){{cite report}}: Check |isbn= value: checksum (help){{cite book}}: ISBN / Date incompatibility (help){{cite web}}: CS1 maint: deprecated archival service (link){{cite book}}: |work= ignored (help){{cite book}}: CS1 maint: location missing publisher (link){{cite book}}: CS1 maint: location missing publisher (link)