Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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