APA

United States, . (1979). Centers for disease control salmonella surveillance. Atlanta, Georgia: Department de Health and Human Services.

Chicago

United States, . 1979. Centers for disease control salmonella surveillance. Atlanta, Georgia: Department de Health and Human Services.

Harvard

United States, . (1979). Centers for disease control salmonella surveillance. Atlanta, Georgia: Department de Health and Human Services.

MLA

United States, . Centers for disease control salmonella surveillance. Atlanta, Georgia: Department de Health and Human Services. 1979.