Ellis, R. H. (1994). The case books of Dr. John Snow. The Wellcome Trust Centre for the History of Medicine.
Čikaški stil citiranjaEllis, R. H. The Case Books of Dr. John Snow. The Wellcome Trust Centre for the History of Medicine, 1994.
MLA način citiranjaEllis, R. H. The Case Books of Dr. John Snow. The Wellcome Trust Centre for the History of Medicine, 1994.
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