Cita APA

(1956). Indexes to the international standard industrial classification of all economic activities. New York: Statistical Office of the United Nations.

Citación estilo Chicago

Indexes to the International Standard Industrial Classification of All Economic Activities. New York: Statistical Office of the United Nations, 1956.

Cita MLA

Indexes to the International Standard Industrial Classification of All Economic Activities. New York: Statistical Office of the United Nations, 1956.