Analysis of information sources in references of the Wikipedia article "Heroin" in Malay language version.
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|date= (bantuan) Nota: Ini adalah petikan beranotasi Wright, C.R.A. (1874). "Mengenai Tindakan Asid Organik dan Anhidridanya terhadap Alkaloid Asli". Jurnal Persatuan Kimia. 27: 1031–1043.|accessyear= ignored (|access-date= suggested) (bantuan); Check date values in: |accessdate= (bantuan) URL rujukan = http://www.incb.org/incb/yellow_list.html|accessyear= ignored (|access-date= suggested) (bantuan); Check date values in: |accessdate= (bantuan) URL rujukan = http://www.incb.org/incb/yellow_list.html|date= (bantuan) Nota: Ini adalah petikan beranotasi Wright, C.R.A. (1874). "Mengenai Tindakan Asid Organik dan Anhidridanya terhadap Alkaloid Asli". Jurnal Persatuan Kimia. 27: 1031–1043.