Pennells, E. (1978). Concrete bridges designer's manual. London: A Viewpoint Publications.
Citación estilo ChicagoPennells, E. Concrete Bridges Designer's Manual. London: A Viewpoint Publications, 1978.
Cita MLAPennells, E. Concrete Bridges Designer's Manual. London: A Viewpoint Publications, 1978.
Precaución: Estas citas no son 100% exactas.