Washington (State). Department of Natural Resources & Washington Natural Heritage Program. (1983). State of Washington natural heritage plan. Washington Natural Heritage Program.
Cita Chicago Style (17a ed.)Washington (State). Department of Natural Resources y Washington Natural Heritage Program. State of Washington Natural Heritage Plan. [Olympia, WA]: Washington Natural Heritage Program, 1983.
Cita MLA (8a ed.)Washington (State). Department of Natural Resources y Washington Natural Heritage Program. State of Washington Natural Heritage Plan. Washington Natural Heritage Program, 1983.
Precaución: Estas citas no son 100% exactas.