Webber, B. (1991). Comprehensive index to Oregon trail diaries. Webb Research Group ; Distributed by Pacific Northwest Books Co..
Style de citation Chicago (17e éd.)Webber, Bert. Comprehensive Index to Oregon Trail Diaries. Medford, OR: Webb Research Group ; Distributed by Pacific Northwest Books Co., 1991.
Style de citation MLA (8e éd.)Webber, Bert. Comprehensive Index to Oregon Trail Diaries. Webb Research Group ; Distributed by Pacific Northwest Books Co., 1991.
Attention : ces citations peuvent ne pas être correctes à 100%.