Não informado. (1942). Plant science literature. U.S. Department of Agriculture, Bureau of Plant Industry.
Citace podle Chicago (17th ed.)Não informado. Plant Science Literature. Washington: U.S. Department of Agriculture, Bureau of Plant Industry, 1942.
Citace podle MLA (8th ed.)Não informado. Plant Science Literature. U.S. Department of Agriculture, Bureau of Plant Industry, 1942.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..