Porter, R. (1997). The greatest benefit to mankind: A medical history of humanity. Norton.
Citazione stile Chigago Style (17a edizione)Porter, Roy. The Greatest Benefit to Mankind: A Medical History of Humanity. New York: Norton, 1997.
Citatione MLA (9a ed.)Porter, Roy. The Greatest Benefit to Mankind: A Medical History of Humanity. Norton, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.