Seattle Audubon Society & Larrison, E. J. (1974). Washington wildflowers, including 1134 species of wildflowers most commonly found in the State of Washington and adjacent areas of Oregon, Idaho, and British Columbia. Seattle Audubon Society.
Style de citation Chicago (17e éd.)Seattle Audubon Society et Earl J. Larrison. Washington Wildflowers, Including 1134 Species of Wildflowers Most Commonly Found in the State of Washington and Adjacent Areas of Oregon, Idaho, and British Columbia. Seattle]: Seattle Audubon Society, 1974.
Style de citation MLA (8e éd.)Seattle Audubon Society et Earl J. Larrison. Washington Wildflowers, Including 1134 Species of Wildflowers Most Commonly Found in the State of Washington and Adjacent Areas of Oregon, Idaho, and British Columbia. Seattle Audubon Society, 1974.