Cite
Origin of HIV.
MLA
McClure, Myra O., and Thomas F. Schulz. “Origin of HIV.” BMJ: British Medical Journal (International Edition), vol. 298, no. 6683, May 1989, pp. 1267–68. EBSCOhost, https://doi.org/10.1136/bmj.298.6683.1267.
APA
McClure, M. O., & Schulz, T. F. (1989). Origin of HIV. BMJ: British Medical Journal (International Edition), 298(6683), 1267–1268. https://doi.org/10.1136/bmj.298.6683.1267
Chicago
McClure, Myra O., and Thomas F. Schulz. 1989. “Origin of HIV.” BMJ: British Medical Journal (International Edition) 298 (6683): 1267–68. doi:10.1136/bmj.298.6683.1267.