Cita APA (7a ed.)

Porterfield, J. D. (1980). COMMUNITY health in the United States. Voice of America.

Cita Chicago Style (17a ed.)

Porterfield, John D. COMMUNITY Health in the United States. Washington: Voice of America, 1980.

Cita MLA (8a ed.)

Porterfield, John D. COMMUNITY Health in the United States. Voice of America, 1980.