APA (7th ed.) Citation

Porter, R. (1997). The greatest benefit to mankind : a medical history of humanity from antiquity to the present / Roy Porter: A medical history of humanity from antiquity to the present. HarperCollins.

Chicago Style (17th ed.) Citation

Porter, Roy. The Greatest Benefit to Mankind : A Medical History of Humanity from Antiquity to the Present / Roy Porter: A Medical History of Humanity from Antiquity to the Present. London: HarperCollins, 1997.

MLA (9th ed.) Citation

Porter, Roy. The Greatest Benefit to Mankind : A Medical History of Humanity from Antiquity to the Present / Roy Porter: A Medical History of Humanity from Antiquity to the Present. HarperCollins, 1997.

Warning: These citations may not always be 100% accurate.