APA

United Nations Educational S. a. C. O. U., .El flagelo del analfabetismo. : .

Chicago

United Nations Educational Scientific and Cultural Organization UNESCO, .El flagelo del analfabetismo. : .

Harvard

United Nations Educational S. a. C. O. U., .El flagelo del analfabetismo. : .

MLA

United Nations Educational Scientific and Cultural Organization UNESCO, .: . .