Park , K. (2015). Park`s textbook of preventive and social medicine (23rd ed.). Banarsidas bhanot.
Chicago-viite (17. p.)Park , K. Park`s Textbook of Preventive and Social Medicine. 23rd ed. Jabalpur: Banarsidas bhanot, 2015.
MLA-viite (9. p.)Park , K. Park`s Textbook of Preventive and Social Medicine. 23rd ed. Banarsidas bhanot, 2015.
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