APA

World Health Organization, . (1961). World directory of veneral diseases treatment centres at ports: application of the international agreement of brussels, 1924 respecting facilities to be given to merchant seamen for the treatment of venereal diseases. Geneva: World Health Oraganization.

Chicago

World Health Organization, . 1961. World directory of veneral diseases treatment centres at ports: application of the international agreement of brussels, 1924 respecting facilities to be given to merchant seamen for the treatment of venereal diseases. Geneva: World Health Oraganization.

Harvard

World Health Organization, . (1961). World directory of veneral diseases treatment centres at ports: application of the international agreement of brussels, 1924 respecting facilities to be given to merchant seamen for the treatment of venereal diseases. Geneva: World Health Oraganization.

MLA

World Health Organization, . World directory of veneral diseases treatment centres at ports: application of the international agreement of brussels, 1924 respecting facilities to be given to merchant seamen for the treatment of venereal diseases. Geneva: World Health Oraganization. 1961.