World AIDS Conference. (1998). Bridging the gap: 12th World AIDS Conference : conference workbook.
Chicago-referens (17:e uppl.)World AIDS Conference. Bridging the Gap: 12th World AIDS Conference : Conference Workbook. Genf, 1998.
MLA-referens (8:e uppl.)World AIDS Conference. Bridging the Gap: 12th World AIDS Conference : Conference Workbook. 1998.
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