APA
World Health Organization, . (1991). Evalution of methods for the treatment of emntal disorder. W.H.O., Geneva: .
Chicago
World Health Organization, . 1991. Evalution of methods for the treatment of emntal disorder. W.H.O., Geneva: .
Harvard
World Health Organization, . (1991). Evalution of methods for the treatment of emntal disorder. W.H.O., Geneva: .
MLA
World Health Organization, . Evalution of methods for the treatment of emntal disorder. W.H.O., Geneva: . 1991.