Cita APA (7a ed.)
Pennells, E. (1978). Concrete bridges designer's manual. A Viewpoint Publications.
Cita Chicago Style (17a ed.)
Pennells, E. Concrete Bridges Designer's Manual. London: A Viewpoint Publications, 1978.
Cita MLA (9a ed.)
Pennells, E. Concrete Bridges Designer's Manual. A Viewpoint Publications, 1978.
Precaución: Estas citas no son 100% exactas.