APA

United States, . (1980). Centers for disease control trichinosis surveillance. Atlanta, Georgia, United States: Department de Health and Human Services.

Chicago

United States, . 1980. Centers for disease control trichinosis surveillance. Atlanta, Georgia, United States: Department de Health and Human Services.

Harvard

United States, . (1980). Centers for disease control trichinosis surveillance. Atlanta, Georgia, United States: Department de Health and Human Services.

MLA

United States, . Centers for disease control trichinosis surveillance. Atlanta, Georgia, United States: Department de Health and Human Services. 1980.