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.
Chicago Style (17th ed.) CitationSeattle Audubon Society and 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.
MLA (8th ed.) CitationSeattle Audubon Society and 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.