Yang H.H, Wu C.G, Xie G.Z, Gu Q.W, Wang B.R, Wang L.Y, . . . Li G.L. (2001). Efficacy trial of Vi polysaccharide vaccine against typhoid fever in south-western China. The World Health Organization.
Chicago Style (17th ed.) CitationYang H.H, et al. Efficacy Trial of Vi Polysaccharide Vaccine Against Typhoid Fever in South-western China. The World Health Organization, 2001.
MLA (9th ed.) CitationYang H.H, et al. Efficacy Trial of Vi Polysaccharide Vaccine Against Typhoid Fever in South-western China. The World Health Organization, 2001.
Warning: These citations may not always be 100% accurate.