Não informado. (1891). Contributions fron the Department of Botany and Rocky Mountain Herbarium. University of Wyoming.
Chicagoスタイル(17版)引用形式Não informado. Contributions Fron the Department of Botany and Rocky Mountain Herbarium. Laramie, Wyo: University of Wyoming, 1891.
MLA(8版)引用形式Não informado. Contributions Fron the Department of Botany and Rocky Mountain Herbarium. University of Wyoming, 1891.
警告: この引用は必ずしも正確ではありません.