Darby, S., Rizza, C., Doll, R., Spooner, R., Stratton, I., & Thakrar, B. (1989). Incidence of AIDS and excess of mortality associated with HIV in haemophiliacs in the United Kingdom: Report on behalf of the directors of haemophilia centres in the United Kingdom.
Chicago-referens (17:e uppl.)Darby, S., C. Rizza, R. Doll, R. Spooner, I. Stratton, och B. Thakrar. Incidence of AIDS and Excess of Mortality Associated with HIV in Haemophiliacs in the United Kingdom: Report on Behalf of the Directors of Haemophilia Centres in the United Kingdom. 1989.
MLA-referens (9:e uppl.)Darby, S., et al. Incidence of AIDS and Excess of Mortality Associated with HIV in Haemophiliacs in the United Kingdom: Report on Behalf of the Directors of Haemophilia Centres in the United Kingdom. 1989.