Norell, S. E. (1992). A Short Course in Epidemiology. Raven Press.
Chicago Style (17th ed.) ZitazioaNorell, Staffan E. A Short Course in Epidemiology. New York: Raven Press, 1992.
MLA (9th ed.) ZitazioaNorell, Staffan E. A Short Course in Epidemiology. Raven Press, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.