Levine, S., & Lilienfeld, A. M. (1987). Epidemiology and health policy. Tavistock Pub.
Lua i Stíl Chicago (17ú heag.)Levine, Sol, agus Abraham M. Lilienfeld. Epidemiology and Health Policy. New York: Tavistock Pub, 1987.
Lua MLA (9ú heag.)Levine, Sol, agus Abraham M. Lilienfeld. Epidemiology and Health Policy. Tavistock Pub, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.