van Zijl, W. J. (1966). Studies on diarrhoeal diseases in seven countries by the WHO diarrhoeal diseases advisory team. World Health Organization.
Čikaški stil citiranjavan Zijl, W. J. Studies On Diarrhoeal Diseases in Seven Countries By the WHO Diarrhoeal Diseases Advisory Team. World Health Organization, 1966.
MLA način citiranjavan Zijl, W. J. Studies On Diarrhoeal Diseases in Seven Countries By the WHO Diarrhoeal Diseases Advisory Team. World Health Organization, 1966.
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