APA
World Helth Organization TRS674, . (1982). Treponemal Infections. : .
Chicago
World Helth Organization TRS674, . 1982. Treponemal Infections. : .
Harvard
World Helth Organization TRS674, . (1982). Treponemal Infections. : .
MLA
World Helth Organization TRS674, . Treponemal Infections. : . 1982.