Voice of America Forum lectures & Porterfield, J. D. Community health in the United States. Voice of America Forum Lectures.
Cita Chicago (17th ed.)Voice of America Forum lectures i John D. Porterfield. Community Health in the United States. U. S. A: Voice of America Forum Lectures.
Cita MLA (9th ed.)Voice of America Forum lectures i John D. Porterfield. Community Health in the United States. Voice of America Forum Lectures.
Atenció: Aquestes cites poden no estar 100% correctes.