Cita APA (7th ed.)

Semba, R. D. (2012). The Vitamin A Story: Lifting the Shadow of Death. Karger.

Cita Chicago (17th ed.)

Semba, Richard D. The Vitamin A Story: Lifting the Shadow of Death. Karger, 2012.

Cita MLA (9th ed.)

Semba, Richard D. The Vitamin A Story: Lifting the Shadow of Death. Karger, 2012.

Atenció: Aquestes cites poden no estar 100% correctes.