National Cooperative Highway Research Program, National Research Council (U.S.). Transportation Research Board, American Association of State Highway and Transportation Officials, United States. Federal Highway Administration, & Wassef, W. G. (2004). Integral steel box-beam pier caps. Transportation Research Board.
Цитирование в стиле Чикаго (17-е изд.)National Cooperative Highway Research Program, National Research Council (U.S.). Transportation Research Board, American Association of State Highway and Transportation Officials, United States. Federal Highway Administration, и Wagdy G. Wassef. Integral Steel Box-beam Pier Caps. Washington, D.C: Transportation Research Board, 2004.
Цитирование MLA (9-е изд.)National Cooperative Highway Research Program, et al. Integral Steel Box-beam Pier Caps. Transportation Research Board, 2004.