Cita APA (7th ed.)
Scherr, G. H. (2012). Why millions died: Before the war on infectious diseases. University Press of America.
Cita Chicago (17th ed.)
Scherr, George H. Why Millions Died: Before the War on Infectious Diseases. Lanham, Md.: University Press of America, 2012.
Cita MLA (9th ed.)
Scherr, George H. Why Millions Died: Before the War on Infectious Diseases. University Press of America, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.