APA

Friis R. H., . (2011). Epidemiology for public health practice. Sudbury: Jones and Bartlett Publishers.

Chicago

Friis Robert H, . 2011. Epidemiology for public health practice. Sudbury: Jones and Bartlett Publishers.

Harvard

Friis R. H., . (2011). Epidemiology for public health practice. Sudbury: Jones and Bartlett Publishers.

MLA

Friis Robert H, . Epidemiology for public health practice. Sudbury: Jones and Bartlett Publishers. 2011.