Electronic sources:
America Responds to Aids Information for Young People (late elementary and middle school aged)
"AIDS" The World Book Encyclopedia. World Book Inc. 1990 pp 164-165.
"AIDS" Compton's Encyclopedia. Compton's Inc. 1991.p.145.
"AIDS" New Standard Encyclopedia. 1993.
"AIDS Medical Encyclopedia" World Book Rush-Presbyterian St. Luke's Medical Center, 1991, pp 13-15.