Cita APA (7a ed.)

Gardner, D., & DeLony, E. (2008). Wood, Concrete, Stone, and Steel: Minnesota's Historic Bridges. University of Minnesota Press.

Cita Chicago Style (17a ed.)

Gardner, Denis, y Eric DeLony. Wood, Concrete, Stone, and Steel: Minnesota's Historic Bridges. Minneapolis: University of Minnesota Press, 2008.

Cita MLA (8a ed.)

Gardner, Denis, y Eric DeLony. Wood, Concrete, Stone, and Steel: Minnesota's Historic Bridges. University of Minnesota Press, 2008.