Cita APA

Beckmann, F. R., & Mertz, D. R. (2005). Steel bridge erection practices. Transportation Research Board, National Research Council.

Citación estilo Chicago

Beckmann, Fred R., and D. R. Mertz. Steel Bridge Erection Practices. Washington, D.C: Transportation Research Board, National Research Council, 2005.

Cita MLA

Beckmann, Fred R., and D. R. Mertz. Steel Bridge Erection Practices. Transportation Research Board, National Research Council, 2005.