Carneiro, I., & Howard, N. (2011). Introduction to epidemiology (2nd ed.). Open University Press.

Carneiro, Ilona, and Natasha Howard. Introduction to Epidemiology. 2nd ed. Maidenhead, England: Open University Press, 2011.

Carneiro, Ilona, and Natasha Howard. Introduction to Epidemiology. 2nd ed. Open University Press, 2011.