Cockrell, N., & Cockrell, B. (1978). Roofs over rivers: A guide to Oregon's covered bridges. Touchstone Press.
Style de citation Chicago (17e éd.)Cockrell, Nick, et Bill Cockrell. Roofs over Rivers: A Guide to Oregon's Covered Bridges. Beaverton, Ore.: Touchstone Press, 1978.
Style de citation MLA (8e éd.)Cockrell, Nick, et Bill Cockrell. Roofs over Rivers: A Guide to Oregon's Covered Bridges. Touchstone Press, 1978.
Attention : ces citations peuvent ne pas être correctes à 100%.