Παραπομπή APA

(2008). International Standard Industrial Classification of All Economic Activties (ISIC), Rev. 4. ESA,UN.

Παραπομπή Chicago Style

International Standard Industrial Classification of All Economic Activties (ISIC), Rev. 4. New York: ESA,UN, 2008.

Παραπομπή MLA

International Standard Industrial Classification of All Economic Activties (ISIC), Rev. 4. ESA,UN, 2008.