APA (7th ed.) Citation

P, P., BM, K., JB, W., M, L., & RL, C. (1991). AIDS in Africa: The first decade and challenges for the 1990s. AIDS (London, England), 5 Suppl 1, S1.

Chicago Style (17th ed.) Citation

P, Piot, Kapita BM, Were JB, Laga M, and Colebunders RL. "AIDS in Africa: The First Decade and Challenges for the 1990s." AIDS (London, England) 5 Suppl 1 (1991): S1.

MLA (9th ed.) Citation

P, Piot, et al. "AIDS in Africa: The First Decade and Challenges for the 1990s." AIDS (London, England), vol. 5 Suppl 1, 1991, p. S1.