APA استشهاد

Foskett, A. (1961). universal decimal classification (3rd ed.). British Standards Institution.

استشهاد بنمط شيكاغو

Foskett, A.C. Universal Decimal Classification. 3rd ed. London: British Standards Institution, 1961.

MLA استشهاد

Foskett, A.C. Universal Decimal Classification. 3rd ed. British Standards Institution, 1961.