Index Theologicus

Citazione Stile APA (7a Edizione)

British Standards Institution. (1973). Universal decimal classification. British Standards Institution.

Citazione stile Chigago Style (17a edizione)

British Standards Institution. Universal Decimal Classification. London: British Standards Institution, 1973.

Citatione MLA (8a ed.)

British Standards Institution. Universal Decimal Classification. British Standards Institution, 1973.