APA

International institute of differing civilization, . (1956). Development of a middle class in tropical and sub-tropical countries. Bruxelles: I.I.D.C.

Chicago

International institute of differing civilization, . 1956. Development of a middle class in tropical and sub-tropical countries. Bruxelles: I.I.D.C.

Harvard

International institute of differing civilization, . (1956). Development of a middle class in tropical and sub-tropical countries. Bruxelles: I.I.D.C.

MLA

International institute of differing civilization, . Development of a middle class in tropical and sub-tropical countries. Bruxelles: I.I.D.C. 1956.