APA Style

et.al., H, M. (1990). Proceeding of the 1989 International Nuclear physics conference : Sao Paulo. Bracil. August 20-26 1990 . Singapore: WORLD SCIENCTIFIC PUB.

MLA Style

et.al., Hussein., M.S.. "Proceeding of the 1989 International Nuclear physics conference : Sao Paulo. Bracil. August 20-26 1990". Singapore: WORLD SCIENCTIFIC PUB, 1990. Buku.