APA

United States, . (1994). Influenza immunizations paid for by Medicare. Baltimore, MD: U.S. Dept. of Health and Human Service, Health Care Financing Administration.

Chicago

United States, . 1994. Influenza immunizations paid for by Medicare. Baltimore, MD: U.S. Dept. of Health and Human Service, Health Care Financing Administration.

Harvard

United States, . (1994). Influenza immunizations paid for by Medicare. Baltimore, MD: U.S. Dept. of Health and Human Service, Health Care Financing Administration.

MLA

United States, . Influenza immunizations paid for by Medicare. Baltimore, MD: U.S. Dept. of Health and Human Service, Health Care Financing Administration. 1994.