APA-referens

Porterfield, J. D. Community Health in United in the United states. Voice of America.

Chicago-stil citat

Porterfield, John D. Community Health in United in the United States. New York: Voice of America.

MLA-referens

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

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.