APA
Bhatnagar S, . (1987). Training modules in epidemiology for medical officer [primary health center]. New Delhi: National Institute of Health and Family Welfare.
Chicago
Bhatnagar S, . 1987. Training modules in epidemiology for medical officer [primary health center]. New Delhi: National Institute of Health and Family Welfare.
Harvard
Bhatnagar S, . (1987). Training modules in epidemiology for medical officer [primary health center]. New Delhi: National Institute of Health and Family Welfare.
MLA
Bhatnagar S, . Training modules in epidemiology for medical officer [primary health center]. New Delhi: National Institute of Health and Family Welfare. 1987.