Spasoff, R. A. (1999). Epidemiologic methods for health policy. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Spasoff, Robert A. Epidemiologic Methods for Health Policy. New York: Oxford University Press, 1999.
Lua MLA (8ú heag.)Spasoff, Robert A. Epidemiologic Methods for Health Policy. Oxford University Press, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.