Allen, J. (1924). State of Washington showing state highways and principal county roads. Shell Oil Company of California.
Style de citation Chicago (17e éd.)Allen, James. State of Washington Showing State Highways and Principal County Roads. California: Shell Oil Company of California, 1924.
Style de citation MLA (8e éd.)Allen, James. State of Washington Showing State Highways and Principal County Roads. Shell Oil Company of California, 1924.
Attention : ces citations peuvent ne pas être correctes à 100%.