Horner, C. E., & Booth, E. S. (1953). Spring flowers of southeastern Washington and northeastern Oregon. Walla Walla College, Dept. of Biological Sciences.
Lua i Stíl Chicago (17ú heag.)Horner, Chester E., agus Ernest S. Booth. Spring Flowers of Southeastern Washington and Northeastern Oregon. College Place, Wash.: Walla Walla College, Dept. of Biological Sciences, 1953.
Lua MLA (8ú heag.)Horner, Chester E., agus Ernest S. Booth. Spring Flowers of Southeastern Washington and Northeastern Oregon. Walla Walla College, Dept. of Biological Sciences, 1953.
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