United States. Army. Corps of Engineers. Seattle District. (1992). Wetland plants of the Pacific Northwest. US Army Corps of Engineers, Seattle District.
Cita Chicago Style (17a ed.)United States. Army. Corps of Engineers. Seattle District. Wetland Plants of the Pacific Northwest. [Seattle, Wash.?]: US Army Corps of Engineers, Seattle District, 1992.
Cita MLA (8a ed.)United States. Army. Corps of Engineers. Seattle District. Wetland Plants of the Pacific Northwest. US Army Corps of Engineers, Seattle District, 1992.
Precaución: Estas citas no son 100% exactas.