Não informado. (1937). Plant inventory. Bureau of Plant Industry, Soils and Agricultural Engineering.
Chicagoスタイル(17版)引用形式Não informado. Plant Inventory. Washington: Bureau of Plant Industry, Soils and Agricultural Engineering, 1937.
MLA(8版)引用形式Não informado. Plant Inventory. Bureau of Plant Industry, Soils and Agricultural Engineering, 1937.
警告: この引用は必ずしも正確ではありません.