Hayes, R., Marsh, K., & Snow, R. (1992). Case-control studies of severe malaria.
Lua i Stíl Chicago (17ú heag.)Hayes, R., K. Marsh, agus R. Snow. Case-control Studies of Severe Malaria. 1992.
Lua MLA (9ú heag.)Hayes, R., et al. Case-control Studies of Severe Malaria. 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.