APA (7th ed.) Zitazioa
International conference on AIDS Firenze & Istituto superiore di sanità. (1991). Science challenging Aids: Final program : 7. international conference on AIDS : Florence 16-21 June 1991. s.n.].
Chicago Style (17th ed.) Zitazioa
International conference on AIDS Firenze eta Istituto superiore di sanità. Science Challenging Aids: Final Program : 7. International Conference on AIDS : Florence 16-21 June 1991. [S.l.: s.n.], 1991.
MLA (9th ed.) Zitazioa
International conference on AIDS Firenze eta Istituto superiore di sanità. Science Challenging Aids: Final Program : 7. International Conference on AIDS : Florence 16-21 June 1991. s.n.], 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.