Cita APA

United States National Herbarium (Washington, DC), United States National Museum, & United States National Herbarium. (1890). Contributions from the United States National Herbarium. Smithsonian Inst. Press.

Citación estilo Chicago

United States National Herbarium (Washington, DC), United States National Museum, y United States National Herbarium. Contributions from the United States National Herbarium. Washington, DC: Smithsonian Inst. Press, 1890.

Cita MLA

United States National Herbarium (Washington, DC), et al. Contributions from the United States National Herbarium. Smithsonian Inst. Press, 1890.