AHUJA TD,BIRDI GS. (1980). ROADS,RAILWAY,BRIDGES AND TUNNEL ENGG. STANDARD BOOK HOUSE.
Chicago-referens (17:e uppl.)AHUJA TD,BIRDI GS. ROADS,RAILWAY,BRIDGES AND TUNNEL ENGG. DELHI: STANDARD BOOK HOUSE, 1980.
MLA-referens (9:e uppl.)AHUJA TD,BIRDI GS. ROADS,RAILWAY,BRIDGES AND TUNNEL ENGG. STANDARD BOOK HOUSE, 1980.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.