British standards Institution. Universal Decimal classification B S 1000 (625): 1976 UDC 625 civil engineering of land transport railway engineering. Highway engineering. British standards institution.
Chicago Edition CitationBritish standards Institution. Universal Decimal Classification B S 1000 (625): 1976 UDC 625 Civil Engineering of Land Transport Railway Engineering. Highway Engineering. London: British standards institution.
Deismireacht MLABritish standards Institution. Universal Decimal Classification B S 1000 (625): 1976 UDC 625 Civil Engineering of Land Transport Railway Engineering. Highway Engineering. British standards institution.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.